Motivation isn't a substitute for purpose

When you have a purpose, something you want bad enough, or a desire to create some change in the world, nothing can stop you. That’s your fuel.
Motivation is a complement, it’s the thing that gets you to the thing—but it’s not substitute. Yes it can get you far, but when the shit hits the fan the only things that will keep you from quitting is your purpose, that insane desire to see some change happen.
 

“Motivation is crap. Motivation comes and goes. When you’re driven, whatever is in front of you it will get destroyed.”—David Goggins

 
Don’t look for motivation, instead look for things that drive you. Motivation fill follow.
 

“If you need inspiring words, don’t do it.”—Elon Musk