Wow, this one is a loaded question! I could list several factors, things, etc that impact on daily basis. My husband, my kids, the weather, my friends, etc...
Mostly though, I would have to say, the biggest would be God, and my own sin. The one desires holiness, the other to keep me as far from it as possible. The one is pure in love and motive. The other, as self satisfyingly driven as possible. I know what kind of person I would be without God in my heart and life, and the thought... terrifies me.
"Behold, If any man/woman is in Christ, he/she is a new creation. Old things have passed away and all things have become new."
- 2 Corinthians 5:17
ps: I am pretty sure I get a "pass" for not having a photo of the Lord. ;)