Good nutrition, a little sport and a lot of oxygen should help.
Don't follow those retarded Western methods with coffee and vitamin pills.
You may want to find a good nutrition mixture for your personal needs. Food is extremely important and unlike most think, good healthy food tastes great too.
During the time I was able to eat Korean homemade meals every day, I had so much energy that even extreme sports could not wear me out.
Spicy Kimchi, a lot of Korean rice, a hot soup usually without meat. Twice every day. But that is just my personal taste.