I didn't ever feel dismissive about my life but there where times when I could dismiss things for reasons I never even knew.  If there is something you don't care about that you should you can't condemn yourself for not caring. Somethings matter and some things don't at least to some people. If you want  to understand why that is you would have to understand the persons persona. My own persona is one of pertenential beliefs, The belief that all things good and bad can happen for any reason. If bad things happen you have to let it go. Don't dwell upon it. That will make you unhappy. You have to look at it dismiss it and move on. The past is the past and the future is certainly to have more of the good and the bad in store be ready but don't over indulge in the future either. The best thing to do is live in the present at the moment of consciousness concious, where your mind is physically and physiologicaly. Becoming to involved with cognotive thought will over illuminate a diffrent part of your life that you can' t even be at at the particualr time. Why go there. Stay within your realm and do whatever makes you happiest at the particular moment. Whatever that may be. People who do always look to the future or dwell on the past go through life in momentary cognocios and don't really interact as much with the world around them. Don't be one of these people. Try to take in your surroundings as much as you can for the things that surround you are what matter in a manner of speaking. If your unhappy with your surroundings ask yourself why that is and move to a new location. If your having problems relocating yourself ask yourself why that is. If there is a reason ask yourself whats the reason for the reason. If there is a reason beyond your control learn to accept that. If there is a reason you can manage manage it to the best of your ability. Don't look back and don't live with regrets. The better you feel about yourself the better off you will be. Don't let others influence your opinion of yourself. Your own view is the only view that matters. As long as you feel you are a person that meets your expectations then others have to accpet you for who you are. Believe it or not your are exactly who you are suppose to be.