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.
you dont. you force yourself to do just 15 minutes of solid effort. chances are you’ll just keep going. the first step is the hardest. cookies dont work for me because like, I can just go get the cookie now if you get what I mean here