Basically, it boils down to discipline. Discipline allows you to do whatever you want. If you think "This sounds silly, I live in a free world, I can do what I

Basically, it boils down to discipline. Discipline allows you to do whatever you want. If you think "This sounds silly, I live in a free world, I can do what I want", think again: All of us had a day during which we went "Meh, I can't do sports/write in my book/practice/work on my toy project, it's way too warm/cold/early/late". That's an instance where you can't do what you want, because you lack discipline. Once you acquire a strong discipline, you just need to go the right path even in the small things and you are very, very integer. It won't be easy, because if you are integer, you will just go your path and collide with stuff and it will hurt and discomfort everyone involved. But then again, that's the point of discipline: You can do what you want, even if it's hard.