“There are two kinds of people who will tell you that you cannot make a difference in this world: those who are afraid to try and those who are afraid you will succeed” – Ray Goforth
Now, they telling you isn't the issue, but you letting what you have been told determine your destiny, your next move is. I tell people that not all laws are meant to be obeyed, the same way not all advice are meant to be followed. Sometimes you just have to do the opposite of what you've been told. Please don't get me wrong here.
Believe in yourself, God believes in you. Go out there and be MAD – Make A Difference. If you succeed, beautiful and if you don't, learn from your failure and do it AGAIN AND AGAIN.