Is it selfish?

I started to write down some goals that i could work towards. One of the things I wrote down was 'to strive for healthy mind, body and soul.' But as soon as I had written it down I felt uneasy. I felt that this was a selfish goal. I think I know deep down that it is important to want and to have these things yet I couldn't come to a reasonable answer why? I'm confused! I wont to feel at ease about having this type of goal. I need to know why it is important and good to want this goal of healthy mind, body and soul? Any comments would be appreciated even if you cant answer it for me.