Self Centred Me - I'm Trying to Change That

I am becoming more and more self-centred nowadays. I seldom notice what really happen to my friends, even those who's close to me and meet frequently. I will not be able to spot my friend's changed hairstyle or color. I can't tell if he/she's slimmer or put on weight. You may say these are trivial matters but I think it's a barometer to gauge my sensitivity to my friends around me.
I would like to change this. I would like to pay more attention to my friends and care about them more. I would like to listen more and talk less. I would like to go out more and get away from my little apartment world more. Haha.... sounds like I'm developing some symptoms of depression.....