If asked this question at a younger age I would say that my mother was main main inspiration. I think that there is a common misconception regarding inspiration, in that while my mother was of course my role model and first teacher, she did not necessarily "inspire" me. The definition of inspire is, "to fill with an animating, quickening, or exalting influence." I never wrote a novel because of something she said or did to push me in that direction. I was never driven to compose a song because she filled me with an exalting influence.
Being asked this question now, I would say that I am inspired more by feelings and events than by any single person. I am inspired by beautiful sunsets, overgrown canopies, and the process of childbirth. I get inspired by the feelings of loss I experienced when my father suddenly passed away from leukemia, or by the memory of the first time I saw my newborn son's face.