In my observation, it’s not whether one gives “110%,” it’s whether one actually gives 100%. Everyone usually gives 80%. The difference is that most feel good about that 80% and call it a day. Folks who actually get things done complete the final 20%. And it’s often the final 20% that is the least interesting or most grueling part of the work. Corporately, you see it when folks think, “someone else will pick it up from here.” Or you just get bored with the task and don’t even realize you didn’t complete it. Personally, you feel it when you think, “I worked hard enough today, I won’t do that last Set of exercises.” Or maybe, “I ate well all day long, but here at 10:30 PM I think I’ll eat that entire bag of chips.”. (That last one is ENTIRELY hypothetical. Really.)