The difference between humans and animals is that we have WILL POWER.
WILL POWER is subject to change - the more you use it the stronger it will get.
You also need a STRATEGY or a SYSTEM that will make your job easier - Motivation is a limited resource. Yes, discipline can surpass motivation, yet there will be a lot of pain, up to the point where things become less enjoyable.
Let's not forget that life's a game. Treat it likewise, play around, have fun, cry, laugh, love, hate...every experience is precious.
Successful doesn't necessarily mean MONEY.
As far as I see it, SUCCESS is WISDOM!
Yes, @truth-and-wisdom I agree that motivation is a limited resource.
Definitely, SUCCESS is WISDOM but only when wisdom is spread regularly and sustained.