2) Proper Nutrition
What we use to fuel our bodies has a lot to do with the way we feel, move, perform, and recover. Below are a few points on nutrition from Michael Pollan's Book, Food Rules.
"Eat food, mostly plants, not too much" - Michael Pollan
1) Eat food
2) Mostly Plants
3) Not too much
I highly recommend reading Michael Pollan's Food Rules. It's a quick and easy read that really makes nutrition simple.
We often overlook nutrition and it's benefits and instead just pop a pill. I would recommend getting your basic diet in order before taking supplements. If you are eating a high quality diet and following these rules your body should be getting everything it needs. Do your best to get the majority of your nutrients from real food, and plants, and don't forget to watch your portions. Once you have your diet in line with these rules then you can start looking into supplementing your diet.