Whether it be to do your job, get your schoolwork done, clean your house, work on your creative passion, etc.
Bonus points if you’re someone without reasonable self-control so saying something like “I can only have a cookie after I do this/while I do this” doesn’t work for you and you’re just going to eat the cookie and not do it.
I mostly second this. I have a mantra “Embrace the uncomfortable”. Not in a “work yourself to death for some number” kind of way, but in a “go outside, even if its raining” kind of way. It helps me to appreciate small comforts afterwards and reduces the amount of energy needed to do stuff.