For me it has been the weight, and this was even before I had my son. Right now since I am breast feeding I cannot really diet the way I would like to. So I wish I could focus more on weight loss really seriously... The good thing is I am trying to work out whenever I can, so atleast I am working on it... Rather than just wishing it would go away
The other thing is time management, that too is a work in progress. As my son is growing up I am learning that is okay to leave him alone in someone else's care to take time for myself. I am also learning to enjoy these times away from him without feeling guilty.
I guess the good thing is that I do not feel as though I am stagnating on both fronts. I am comfortable with who I am and am working to improve myself so that is a good thing IMHO.