As someone else on this thread already said it's because things aren't going as planned. Obviously one would be quick to point out that life likes to take plans and throw them into a black hole rendering them useless. Now things going as planned would be some optimistic hippie BS so we can't have that. You have to struggle and pick yourself up (if you have nobody to help you) because otherwise you won't be able to have success in life.
Because god fucking forbid I don't have one fucking break in my life because that is considered too much to ask for and is considered to be whining and useless. You would think that after a lot of work, tears, and dedication would mean something. But nope! The moment that something goes wrong it all goes to waste and you might as well have not done it in the first place. Yeah this sounds defeatist as fuck but man sometimes a break would be nice but nah fuck him, its "building character".
At least I have something that I could put down in my college essays.