That doesn't sound odd to me, at all. I am the same way.It sounds odd, but I get joy if I can help someone else, yet I'm not very good at helping myself.
At present, my main focus is helping my husband get through grad school and his first year as a public school teacher but it doesn't seem like nearly enough after the things I have been involved in previously, such as being a volunteer caregiver, etc. I have a lot of confusion about my own purpose here. It seems like something good ought to come out of all of this but what precisely that may be is a lot harder to imagine.