The Force That Shapes Your Life

Every single person is driven by two things avoidance of pain and approaching pleasure according to Tony Robbins. If you're trying to lose weight it just means that you associate more pleasure to eating pizza then the pain of being overweight or the pleasure of being a healthy weight. There's more pain associated with losing the weight and pleasure associated with eating the pizza than the other way around. He also talks about this is an interesting quote here just in that context he says you must put aside the passing moments of terror and temptation and focus on what's most important long term.