Surround myself with positive, supportive people

I had some friends who, when I would express concerns or fears to them, would just say something like “yeah that might happen,” or put down what I wanted to do (like choosing to pursue a career as a musician for example.) I already have problems with being self-limiting so I don’t need to have people around that are creating more doubt and anxiety in my life. I am avoiding those people and spending all my time with a small group of people who always are encouraging and who believe in me and my goals. I know it will help me accomplish everything I want to do and make me happier in general.