I would start with the way you concluded, i love it. Truly, no one can make you as happy as that which would come from you. The heart of man is deadly, so never put your trust in man.

Moving and spending time with those who can relate to your dreams and aspirations in life can greatly boost your determination, especially when there is a friendly competition that pushes you guys to be better.

Get someone who is always consistent and follows the person's steps. That is one of the major ways to overcome your doubt.

Saving the best for last, i love this phrase of yours. This is what i did when i started on steemit, and it did so much for me.

Good luck @josantos