https://www.quora.com/How-did-Elon-Musk-learn-enough-about-rockets-to-create-and-run-SpaceX/answer/Jim-Cantrell?share=f2c50ef7&srid=uPHbO

Find a goal. Understand it. Understand WHY. Be determined to achieve it. Do what's necessary to achieve it. Refuse to accept defeat.

If it is a good and noble cause, it will be worth the time spent.