That's a pretty tough theme, as meryl said.
Hope to me is a quite irrational thing that is not dependable, but, as BlackThornn said, is healthy 'cause it makes you wish in better things to come. Having no hopes means you passed the limits that bring to blind desperation.
Self-esteem to me means acceptance towards your ego, or at least it's the proof you don't despise the person you are. High self-esteem and pride are not the same thing anyway, but a person who has really low self-esteem for sure can't be proud. They're somewhat connected, but they're not identical. I'd say pride comes after you gain a certain amount of self-esteem, but I'd say also that pride can be a temporary disposition (foe example being proud of something you did) while self-esteem is more a natural condition that can increase or decrease in certain situations, but remains almost the same during your life.
About the question "Why do you keep on living" I frankly have no clue. Or at least, this seems a more personal question, so it'd be really long to give an explanation and this would be not the right place for my personal rants
I'd skip this one, but for a more general answer, I agree, more or less, with meryl's post, so I won't post a clone of her reply
