One of the most difficult things about life is understanding when your time is up. I tried to make it as much as euphemism as possible because I assume you understand what I mean by that. When it's your turn to go, you did what you could in so little (or so much) time, but how would you like to be remembered?
Everyone has their own perception and idea on who they are as a person and what they want to do in life, but sometimes the problem is them having a fear of accomplishing too little. This is a common anxiety that people have, so what they do is they try to do everything they want to do in life. It's not always successful and they don't always get everything done, but it's not to say that when they die, they haven't done anything right?
Aside from being afraid of not doing anything in life, most of the time the biggest worry for people what people will remember them by. Obviously, no one is perfect and has their own faults, but sometimes feeling like they are a good person that has more bad than good in them makes them feel like they're a bad person.
When I was in high school, someone a grade lower than me had committed suicide a few days before my senior year started. She was a smart, funny, and very loyal girl to all her friends and family members. Aside from being depressed and self-esteem issues, she also was not satisfied with who she was. That only made her death so much shocking than it already was.
I'm not 100 percent sure on how the full story went, but she had supposedly wanted everyone to remember her as being the good person she was. The smart girl that pulled straight A's in all her classes, made (what it was referred to in my high school) Principal's List, and was a star in soccer. Remember her for all the good she did in her life. Leave out all the rest.
What I mean by that last statement is forget all the bad things not just about her, but for anyone else that wants to be remembered that way. When you die, what do you want to be remembered as the person that did nothing but lay on the couch all day without a care in the world and not making any money, smoking cigarettes, and withdrawing from relationships? Or, do you want to be known as the kind, loving, family-oriented person that got the career you wanted with all the talent in the world?
As mentioned earlier, no one is perfect and no one will ever not make a mistake. That's what makes us human. We learn from our mistakes and our mistakes make us better people. Be yourself. Do what you like doing and do what you can do.
Don't worry about living up to the standards of others just because they may not appreciate you fully. Forget the wrong you did and have a reason to be missed when your time comes.