I've started to look at life differently. When you're thanking God for every little you - every meal, every time you wake up, every time you take a sip of water - you can't help but be more thankful for life itself, for the unlikely and miraculous fact that you exist at all.

The Bible improved my ethical IQ. I started to act like a good person. I tried not to gossip, and lie, and covet, and just by pretending I was a good person, I think I actually became a little bit better of a person. I'm not Gandhi or Angelina Jolie, but it was a baby step.

I tried the paleo diet, which is the caveman diet - lots of meat. I tried the raw food vegan diet. And I tried the calorie restriction diet, which is the idea is that if you eat very, very little - if you're on the verge of starvation, you will live a very long time. Whether or not you want to, of course, is the idea.

I grew up in a very secular home with no religion at all, so I was starting from zero.

The Bible talks a lot about thankfulness, and I'm more thankful than I ever was. I try to concentrate on the hundreds of things that go right in a day, instead of the three or four that go wrong.

I love to live things, so I wanted to immerse myself and get into the mindset - and sandals - of my forefathers.

It's hard to be in a bad mood when you're walking around looking like you're about to play the semifinals at Wimbledon.