Who has been the biggest influence on your life?

Hi, everybody!

A friend of mine just asked me, who has been the biggest influence on my life. I actually found it a bit difficult to answer, but I came to the conclusion that my father has been the biggest inflence. He has always been supportive no matter what, and only wants the best for me. 

So I thought, why not put the question out here.

Who has been the biggest influence on your life and why?