Learn to be rich - 1

One of my first advice to someone that ask me "How do you learn to earn a lot of money ?" is :
1- Learn to double 1$ before you learn to double 100 000 $.

Double up 1$ then 2$,4$,8$, ... is not so easy.
You will have a lot of failures but as you know "Failure is success if we learn from it."