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 don’t wait for motivation. I just tell myself, “You don’t have to want it, you just have to do it,” and then I do it. Usually.
Once I’m already doing something I tend to keep doing it, so it’s the transition that’s hardest. I find that if I start a task when I’m already transitioning from another activity, it’s a lot easier than getting up off the couch or putting down my phone.
It sucks, but you can’t really expect it not to suck.
Another insight that I adopted years ago was to do unpleasant tasks when I’m already unhappy. If I’m gonna be miserable anyway, might as well get something out of it, right?