If you are having trouble pursuing your dream, keep trying, do not give up. Go to a counselor, there are lots of councilors in schools and people to help in job centers. Just go ahead and talk to someone, make an appointment and be early for your appointment which will show that you are serious and that you care.
There are many people out there who struggle everyday and want to give up but do not give up because they really believe that they can do it. Get some valuable feedback from your friends and family and see what their view on it is. It is important to have a good ground of support because you are like a tree that is growing everyday. You are not just some random person, you are a human being. You are special in your own way and you just have to show your colours and shine. You can do it, just put your mind to it and you will succeed.