Stubbornness. Most people get over their childhood dreams and adjust to life as an adult where we don't get to do what we wanted. I'm still trying to make it happen 19 years later.

Motivation comes from within when you have a strong enough reason to do something. Like it aligns with who you are, what you desire. But it comes and goes. Discipline let's me hold the fort day to day regardless of what motivation is doing.