I'm staying with my family, they are all addicts and it's hard to be around. What should I do?

It does sound like that would be a very difficult and lonely situation to be in; however, it sounds like you are making the best choice for you at this time.  You are trying to avoid the addiction, and that's great, but unfortunately it sounds like it comes along with the downside of having to separate from people that you love.

Is there a way that you can keep in contact with them (from a distance) so you can continue with some form of relationship, while also guarding yourself?  For example, regular phone calls, writing letters, video chats, etc.  Now, this is only if you feel like staying in contact is a healthy choice for you.  If you don't feel it is, then this might not be the best option.

Some alternatives for dealing with your loneliness - 

1) Get involved in local groups/activities to build a support system with people in the community so you can combat some of the loneliness by forming new, positive relationships with others.

2) What kind of things do you enjoy doing?  Focus on your hobbies and things that bring you pleasure so that you can increase positive feelings in your day-to-day life.

3) Connect with others in your family that aren't part of the "addiction bubble" and work on building those relationships so you can continue to have some sort of connection to family.

4) Find online discussion forums where you can connect with people virtually until you find those in person supports that you need.  There are millions of discussion boards out there with different topics.  You can find some specifically about dealing with loneliness, addiction in your family, or something more fun and "light," like a discussion board surrounding a favorite game, activity, or hobby that you enjoy.  

5) Don't bottle your feelings.  Communicate what you are experiencing with others.  Don't increase the feelings of loneliness by shutting those feelings down and avoiding connections with others.  Find a therapist you can talk to weekly that can help you not only feel connected to someone, but also help you find ways you can connect with others in your daily life.

I hope this helps!  It is also important to remember to focus on the quality of your relationships that you do have, not the quantity (avoid comparing yourself to what others have or what seems to be "normal").  Having one or two truly meaningful relationships will be more fulfilling than having a dozen relationships with people you aren't really connected with.  You've got this! :)