Lack therof....

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I was doing really well from January through about July working out and having strong motivations... But I seem to be lacking in all of the above. I've put back on 6/12 lbs I lost. I know its related to no longer working two jobs and going back to school. But I feel disgusting.

What motivates you?
What "rewards" do you give yourself when you meet goals?
How do you fit it into your busy schedule?