Am I wrong?

I am retired, out one disability but I consider it retired. Have a friend that is on me to come over and look at there atv. I am dragging my a** getting there. It will not start, sort of sounds like a bad starter. Anyway....ever since leaving the Post Office I have developed this feeling of not wanting to be "obligated" to anybody but my wife and myself. Up to the point of leaving the PO I was the first to volunteer for things. Really enjoyed helping people. But any more I just do not want to. And if I am going to do something it will be on my schedule. Is it wrong to feel like this?