Lance Armstrong motivates Vince Vaughn in the film Dodgeball by invoking negative emotions that Vince feels a compulsion to move away from. Or maybe it’s just silly and funny.
Be careful however as this way of motivation has two problems. The first is that you need something compelling to move towards otherwise you will only move forward until you are no longer feeling pain, then you fall back into your old habits and don’t take action again until you’re experiencing pain again. (This is the classic pattern of the yo-yo dieter. Diet until you are thin, no pain from being overweight, start eating again, feel pain, start diet again, etc.)
The second issue with this way of motivating yourself is that it’s not a good thing to focus on things you don’t want as that’s inevitably what you’ll end up with. So use this sparingly!