First of all, when you go for the goal that you want you will have to overcome all the obstacles. You will get to know the things and then when you will reach your goal millions of other people will be inspired by you and they will follow their dream the same as you followed.
When people start to follow you, when people will start to listen to you it means you are one step closer to being successful. You have to make a sacrifice today; you have to pay the price today with the hard work & Brave Decision. The crazy truth in today's generation is that most people are waiting for the other people to make them successful or waiting for some talent agent to discover them or explodes their business But You can't put your dreams in the hands of someone else.
Don't expect others to believe in you.
Don't expect your friends to get behind your dreams.
Don't expect your family to support you with what you love. If they do then that's great but if they don't then you can't go back and blaming them for your failure.