To striving for just good enough, because the marginal amount of satisfaction or pleasure that can be found in "great" just isn't worth the time or the goddamn effort.
To a job you hate, because you have no idea where to even start to change that.
To working overtime, because yeah, you could use the extra money, and fun and life and family and living can wait till next weekend. Or next month.
To never saying no, because honestly, it's just easier to say yes, and do it.
To doing something you don't want to do for the next 50 years, because it never occurred to you that you don't have to.
To having done something you didn't want to do for the last 30 years, because it just went by so fast.
To having no idea that you've already given up, because life has beaten you down so many times.
Sometimes, I have just the most fleeting flashes of these feelings. And worse, they've gotten more frequent and intense as I've gotten older.