Most of the time we blame others for not trusting in us or not supporting us. What I believe is rather than expecting the acceptance from other around us you must accept yourself first. Then only you can make progress and be a self-confident person.
How many times somebody said to you, YOU CAN'T DO IT. They can be your Parents, Relatives and sometimes Friends too. When somebody wants to do something out of the league people around them try to demotivate them. WHY DO THEY DO IT? WHAT IS THERE MOTIVE BEHIND IT? What I will say is, that's not important What others feel and say. You should believe in yourself first.
Let me start by saying this "If you don't believe in yourself why anybody else is going to believe in you". It's as simple as that. You may ask why and how I will trust myself and my abilities? Right?
Let me tell you that, every human brain is the same. The only different thing between us is how we use our brain, how dedicated are we towards your goals, and that makes all the difference. If you are demoralizing yourself then everybody around you is going to do the same.
So rather than blaming others to draw you back, you must take it on yourself. You must prove yourself that you are not a penny less than anybody else. The day you will get that feeling you will start to believe in yourself.
I will go one step further and say, it doesn't matter whether they believe or not; all that matters is whether you believe in yourself.
It's difficult to do self-analysis, I will tell you a short method which I used to be more confident about myself. You should try to do small things that you already know, complete those activities and enjoy the sense of success. Enjoy the sense of achievment for completing the task. And the next time try something harder in the same field; you may fail at it a couple of times; try again.
When you will complete that work or activity or a hobby you will feel good. Continue with this method. Take one more difficult thing and complete it; a step at a time. And that's the way you will start believing in yourself. This is not enough but this is good enough to start with, so don't wait for a MESSIAH to save you from this world; you got to do it yourself.
On this positive note, I am giving pause to my thought and I believe that you will also try to find the ways to believe in yourself.