Since merely being healthy isn’t motivation enough, hurting you where it counts (your wallet) often is. If you think you’re up for a serious challenge this year you can start by tinkering with their Prize Calculator. Their prizes max out at $10,000 (which is pretty hard to achieve) but if you start with something fairly realistic, let’s say 20 pounds in 6 months, you could win up to $1,200 with a $100 monthly bet.
The ego is the driver making the decisions. It decides between the devil (the id) and the angel (the super-ego) on either shoulder (yes, all those cartoons you've ever seen are partly true). We have voices in our mind, and it's up to the ego to decide which one to fulfill. Its goal is to satisfy the id in some way while also attending to the super-ego.