What steps does someone take to not have sexual fantasies about a lot of women, quite frequently?

Hi M! Thank you for asking this valuable question on the "Ask a Licensed Therapist" forum. I really appreciate you taking the time to reach out for support on the topic of sexualized fantasies. The fact that you are willing to seek out guidance and direction about this aspect of your imagination speaks to your self awareness as well as your other strengths. I hope that my response will be helpful for you in some way!

I would be interested in hearing more about your experiences with managing these fantasies. What is your personal outlook in regards to sexual fantasies? Is this something new for you that had just recently begun or something that you have been managing for a while? Are these thoughts intrusive for you or causing significant impairment or distress in your occupational or social functioning? Would you consider these fantasies to be recurrent or have they increased in frequency or intensity or time? Do the sexualized fantasies seem to be burdensome for you at this time? Are these fantasies a source of anxiety, stress or even depression?
Take some time to answer these questions for yourself. You may want to consider journaling about your responses to these questions. The therapeutic writing process can be beneficial in organizing thoughts and processing emotional experiences. If you choose to start therapy, you can review your answers to these suggested questions with your therapist. If you have close friends or family who you trust, you may also want to consider discussing these questions with someone in your support circle.

I know that you mentioned that you do not have have any thoughts of harm when you experience these frequent fantasies. What are some of the feelings that have accompanied these thoughts? It is a good sign that you have not been feeling concerned about any potential harm that these thoughts could be having. Despite this, it sounds like there may be some adverse effects to having these thoughts. As a therapist, I am trained to determine whether or not an individual has the potential for harm to themselves or to others. If you do not feel that anyone, including yourself, is at harm, that is always the ideal scenario.

It sounds like it is okay for you to fantasize. This is not a reflection on who you are as a person or even as a spiritual being. Believe it or not, daydreaming is actually considered to be a mild form of dissociation. Some individuals may regard dissociative experiences to be a coping defense mechanism. Mild forms of dissociation can be attributed to an active imagination and in some case may even be regarded as a "healthy" form dissociation. Here is a link to more resources on this topic:

https://maladaptivedaydreaming.org/blogs/md/maladaptive-daydreaming-vs-dissociation

I recommend practicing some mindfulness techniques at this time. It sounds like the mindfulness dialectical behavioral therapy (DBT) skill may be helpful for you to recognize and manage your thoughts. Simply notice your thought as just a thought and do your best to refrain from passing judgement. Through this approach, you may realize that the thoughts are just thoughts and that they will come to pass. By eliminating judgement, you are giving yourself space to analyze your thoughts in a more mindful way. If you are willing to keep track of your thoughts on a calendar or daily planner, that may assist you in tracking the frequency, intensity or even the triggers and warning signs for these thoughts.

In addition to DBT principles, I would also like to mention the psychoanalytic theory. Have you learned about Sigmund Freud's psychodynamic approaches to therapy? Freudian psychoanalytic theories have a basis rooted in sexual pleasure and desires. The ideal is that there is an ongoing war or conflict between three parts of oneself: the id, the ego and the super ego. The id is the unconscious part of the self that has deep fantasy and sexual desire; the ego is the most conscious part of the self that is more rational and relatable; and the super ego is the superlative, moral and inherently good aspect of the self. When these three parts are at war, inner conflict arises which causes distress, anger, agitation and anxiety.

My advice is to recognize how these parts of yourself flare up against one another. In addition, I would recommend trying some free association techniques, also established by Freud. Essentially, free association means allowing thoughts to come one by one, as freely as possible. A way to practice this principle of free association is to write down all your thoughts in a five minute time frame. Try not to concern yourself with whether or not the thoughts make sense or are interrelated at all. The foundation of free association is that all thoughts are connected. The real question is just: How?

Lastly, the art therapy intervention that I will offer your on this topic is the tree drawing test. The directive is relatively simple in that all that is required of you is to draw a tree with pencil or pen on copy paper. If you want to be creative and choose to paint, color or even sculpt your tree, that is always encouraged. 
When you complete the drawing of your tree, I want you to self assess the crown of your tree. The crown is the top part of the tree, above the branches, where the leaves live. The crown symbolizes the fantasy life. My hypothesis would be, based on the information that you provided in your question, that you will have a very healthy, full crown. If that is the case, that part of your tree signifies imagination, aspirations and dreams. This is a source of strength, as the tree needs its leaves to continue to thrive and grow. Ultimately, the tree drawing is an unconscious representation of the self. What else can you discover from your tree drawing?

Thank you again for asking this important question. I wish you all the best on your therapeutic journey on BetterHelp! I hope that my response has been helpful for you in some way! Have a great day!