In that case, look for friends who are like-minded individuals. We can't choose our family, but we can choose our friends. My friends are my family, and they are very supportive and we share very similar ideals. Obviously you can't just make friends by snapping your fingers, but if you have certain hobbies you could find things to do involving those hobbies that would allow you to meet new people, and in change those people could become your support group. For instance, I am a gamer. I can make new friends by simply going to a gaming store and talking about games with the people there.

At the end of the day, though, you still have to make your own decisions and not let others sway you. Being given advice doesn't mean you have to take it. I lost my support as a kid when my mother walked out on me, but I have since then surrounded myself with supportive people. They may not always agree with my decisions, but they support them in understanding that they are my decisions to make.