How can I earn my trust in people back?

I am too fragile in relationships, but also emotionless. Sharing and depending on other people makes me insecure so I try to be a mysterious box, but I love people depending on me and helping them. It scares me to open myself to other people, even my loved ones since I believe they may hurt my emotions in the future. Because of this, I mostly feel empty. If I have emotions for someone, I live it at a peak in myself, but cant show it to them. If I see a wrongful act from that person (even though it is not really that), I create very different scenarios in my mind and feel like I am going to lose them, and I believe they don't feel like as I think they feel. To sum up, I think I want people to feel like how I want to feel, but don't let them do the same to me. I am like this probably because I was broken a couple of times, even with small things, and that was enough for me to close myself. I want to protect myself, but also want to learn to trust in people again.
Asked by eru
Dear Eru,
Thank you for your message.
Like what you've said, what you have witnessed and experienced in the past most likely conditioned you to avoid all emotions and to disassociate from those situations so that you could function and survive, by doing so perhaps we have learned to suppress most if not all unpleasant emotions. We have done the opposite from what we should be doing, to understand and accept all emotions without judgment. Yet you're not the one to be blamed for that, your brain did what she thought was the right thing to do to keep you alive, by protecting you from these unpleasant emotions because she thought they would harm you.
After all, we are all humans, and sometimes I say to myself that since I'm a human I might as well learn to live as a human, which means not to force myself against my feelings, rather learn to float and accept all of the experiences as I go through in life.
According to recent psychological researches, one of the main causes of many psychological problems is the habit of emotional avoidance. This may seem surprising because the attempt to avoid negative emotions appears to be a reasonable thing. After all, negative emotions don't feel good, and they are often linked in our minds to negative events that we want to avoid or forget. Moreover, we are all familiar with the momentary relief that avoidance can provide. If the thought of speaking up upsets me, then I can make myself feel better by deciding not to speak. Indeed, avoidance is an effective solution in the short term. Long term, however, it becomes a bigger problem than whatever was being avoided in the first place. And life, if you're at all lucky, is a long-term proposition.
Avoiding a negative emotion buys you short-term gain at the price of long-term pain. When we avoid the short-term discomfort of negative emotion, we resemble the person who under stress decides to drink. It ‘works,' and the next day, when bad feelings come, he drinks again. So far so good, short-term. In the long run, however, that person will develop a bigger problem (addiction), in addition to the unresolved issues he had avoided by drinking.
However, there are several reasons why emotional avoidance could be harmful.
First, as we all know and experience, important goals, and pursuits in your life may inherently involve going through some challenging times and situations, and an unwillingness to ‘pay the toll' for the trip may narrow your life horizons needlessly. Over time, avoidance becomes a prison, because after a while you begin to feel the need to avoid many situations, people, experiences, and places that may bring the negative emotion to mind, stir it, or remind you of it. And the more you avoid, the weaker you feel, the more your coping skills diminish, and the less of life you can experience.
Meanwhile, attempts at avoiding negative emotions are usually futile. Telling yourself that a certain emotion is intolerable or dangerous traps you in constant vigilance regarding the very thing you're trying to avoid. You become hyper-vigilant about any possibility of this feeling arising. The fear of the impending negative experience becomes a negative experience in itself.
Plus, emotional avoidance often involves denying the truth--not a good foundation for a healthy life. It's like someone who looks out the window, sees snow falling, and then tells himself: "it can't be snowing." Clearly, it can, and it is. Granted, you may not like snow. But denying the fact that it's snowing is unlikely to solve the problems posed by snow.
Also, avoidance lengthens the period of anticipation, and anticipatory anxiety is usually a much more noxious condition than the actual situation being anticipated. This is mainly because when you anticipate, your imagination is unbounded by actual situational demands. You can go anywhere in your head regarding something that hasn't happened yet, and so you'll often go wild with negative, catastrophic scenarios. In contrast, once actually in the feared situation, your mind becomes bounded by the parameters of what is happening around you. And what is actually happening is usually less than spectacular or catastrophic. Real catastrophes are, after all, really rare. Reality generates many fewer extreme situations than the unbounded imagination.
Now, before we discuss a more healthy way to handle negative emotions, we need to understand the function of emotions in general. You can think of your emotions as a source of information. Your emotions tell you something about what's going on with you and around you. Emotions, however, are not the only source of information available to you. You also have your rational thoughts, your stored knowledge, and experience, your values, and your goals. Information provided by emotions needs to be appraised and evaluated in light of these other sources in order for you to decide how to behave in the situation.
Regardless of our emotions, we always have choices of action. Our decision will depend on synthesizing knowledge from many sources. For example, if you and your child are approached by a wild dog while on a nature hike, you may feel fear, and with it a desire to flee, but decide to stay and fight the dog to protect your child. In this case, your values ("I have a duty to protect my child") dictated that you ‘disobey' your fear. Emotions, when viewed as part of a spectrum of available sources of information, are a bit like the weather report. They are important to know, consider, and understand, but they are not necessarily the overriding factor in your life plans. 
When the weather is bad (not to your liking), it doesn't mean you have to deny it, focus all your attention on it, or cancel your plans because of it. What you need to do is accept the weather and adjust your plans accordingly. If my goal today is to pick my son up from daycare at 4:00, and it's suddenly snowing, and I don't like snow, I will not waste my energy raging at the sky, nor will I leave my son stranded. I will put on a parka, leave home 15 minutes earlier and drive carefully to get him.
As a human being, we are going to have all kinds of emotions, just like there are all kinds of weather. These emotions are, more than anything else, just a part of being a living human being. By accepting your emotional life, we are affirming our full humanity. Emotional acceptance is thus a far better strategy than avoidance.
Emotional acceptance refers to the willingness and ability to accept and experience the negative emotion, to acknowledge and absorb it. Acceptance offers several advantages. First, by accepting your emotions, you are accepting the truth of your situation (it is snowing). This acceptance means that you don't have to spend your energy pushing the emotion away. Instead, once the emotion is acknowledged, you can then turn to pursue the behaviors that are aligned with your goals and values.
Second, when you accept the emotion, you are giving yourself a chance to learn about it, become familiar with it, become skilled in its management, and integrate it into your life. Avoidance doesn't teach you that, because you can't learn to do something by not doing it.
Third, acceptance is implicitly akin to saying, "This is not that bad." Which is the truth--negative emotions may not be fun, but they won't kill you; experiencing them as they are--annoying but not dangerous--is eventually much less of a drag than the ongoing (failing) attempt to avoid them.
Finally, when you accept a negative emotion, it tends to lose its destructive power. This is surprising and counterintuitive to many people, but if you think about it for a while, you will see the logic of this approach. 
Looking forward to talking with you more,