When you are about to give up, remember those who said you are not good enough. Remember those who did not support you, lied to you, made you look like a fool. Remember those people who were not rooting for you. At that moment they thought you were weak and would not accomplish the greatness you were made to put out into this world. You need to remember those people because those are the people you need to keep away from your vision.
Instead, be the person who decided to go for it anyway! Whatever it is you are afraid of do not let the negative people convince you out of what you believe in. Stop making yourself feel obligated to people and their opinions. Effort and determination are your most attractive traits. Understand that no one is going to root for you as hard as you do to continue to be your biggest cheerleader and strive.