How do you deal with having no family or support system?

It is not an easy task to deal with no support system. I suggest first getting a good counselor/therapist to share your troubles with. Then involving yourself in outside interests and hobbies. Over time you will meet others with similar interests. Try to see your current friends as your extended family and you will not feel so deprived.

Take care and love yourself, build your self esteem through seminars, books and meditation.