Not Good Enough?

Ever feel like no matter how much you try or do for others it is just not good enough?  I've felt this way off and on probably all my life but lately the part about doing things for others is getting to me. A LOT.  I am tired of feeling this way.  I try really hard to do things for myself, my family, friends and in general other people but yet feel unappreciated most of the time. Like what I did do for them, was just not good enough.  I hate feeling like that.  I hate that people can make me feel like that.  The question is how do I change it?  I obviously can not change their opinions (or what I think is their opinions) but I can change my way of thinking.  That goes back to my how question, so how do you handle that?

I imagine most of us feel this way at some point or another in our lives. I just think it's time for a change and need to focus on me.  Why do we care what others think so much? Is it ingrained in our minds as we're growing up, that if we can't do something "right", we are going to disappoint our parents, family and/or friends? I try really hard to not do that to my kids, but I am sure I've slipped. I am not perfect.  I just want my kids to grow up and know they tried and it's OK if they didn't do something perfect or the way someone else wanted it. 

I guess it's time for some soul searching to see if I can figure out how to not let myself get down when I think others are looking down on me or my actions.  If you have any suggestions I am all ears... well eyes ;)