I found that the best tip that I could have ever used was really simple and it is working for me. I was told to eat breakfast like a King, Lunch like a Prince and Dinner like a Pauper. And it really has kicked my energy into high gear. I know that you can stick with this. Just stay focused and remember we all have set backs, It is continuing on that determines if you succeed after having a set back.
Best of luck to you.