How to self-discipline when one finds it exceedingly difficult? Is it a matter of just sucking up hated activity 'til it's habit?

It’s hard to find discipline doing something you don’t like. And if you turn it into a habit then it will become a bad habit.

This is hard: but find something you crave for. Something positive you can really obsess about (and the process of doing this will be another blog post). Then it will be easy to find the discipline to do it, even on days that seem hard to do it. That’s a good habit. Find good habits instead of develop bad habits.