Worst advice ever. If everyone would stay exactly where they are (they won’t try to be bigger than they are), we are would sitting in caves, and throwing stones at each other.
Who knows. Maybe that would be better.
The only thing that makes difference between people, is that some of them have patience, conviction and determination, to be bigger than they are and they succeed at it, while other give up after X failures and get back to their safe mundane lives.
The proper advice should be. If you failed, make few steps back, analyse what have you been doing, find mistakes, repeat the process without making mistakes.
If you fail again, do the same thing. Repeat until you achieve your goal.