You know even people without PTSD have some of these issues.. how the semi serious joke "mid life crises" came about! I might not be as old as you but next spring I hit 30 and even I can look back and say.. what did I acomplish? and it feels like what I still need to get done to settle my life for my kids "own a house" "save money for their collage" bla bla bla stuff.. it seems to be getting harder and that I have less time to do it in now. I guess I'm saying that it doesn't have to be just PTSD that causes some of normal life stress.. everyone has some stuff like feeling your goals in life are getting further away or fading away... or that the time you have spent hasn't amounted to much! I find sometimes I just have to stop looking at the big pictures and see the small stuff.. like how beautifull your plants are and not everyone can keep plants alive let me tell you! LOL
anyways.. hope you find the answers you are looking for! and really don't feel bad if you havn't done anything "big" in your life.. not many do... and remember all the little things add up to become big things after awile!