1. A lesson is repeated until learned. A lesson will be presented to you in various forms until you have learned it. When you have learned it, then you can go on to the next lesson.
2. Learning lessons does not end. There is no part of life that does not contain lessons. If you are alive, ...

1- Learning a new skill will get you to a better place, even if you don't see that the skill is helpful.

2- Remember there is no time wasted while learning, if you see that the skill didn't give you an advantage, it gave it to you in an indirect way.

...

... to the bad experiences and negative people you can't stop thinking about. 

Thank them for the lessons you’ve learned, because they helped you to become better.