I usually think of myself as having three major influences, although I know there are a lot more. One is my husband, who is in a completely different field, but we've been together for 20+ years, and I value his opinion and perspective (he doesn't always believe that!).
The second would be my colleague/business partner through most of the '00s. I learned a lot from him, and still do.
The third would be my dad, who did nothing relating to what I do work-wise, but he understood where my own passion was, and he made a point of showing me that what I was doing was worthwhile. And he did that at an age when a lot of my female age peers with small children were hanging it up -- something that I felt a lot of pressure to do but didn't want to. He's been gone more than 10 years, but that still sticks with me and has motivated me through some tough times.