Do you use a multivitamin? If not sundown and puritan have the best products on the market. An omega 3 supplement would be perfect given your habits. These help with circulation, mental focus, etc.
Don't try any energy drinks with taurine, use a calcium, magnesium, zinc supplement. Of course speak with your medical provider, but all my clients have benefited greatly from small supplementation and some planning in advance for meals.
If you have a day off. Cook some chicken breasts and healthy sides, enough for a few days. Get rid of the processed food. With most of those products your not getting what meets the eye.
Truth is, with the demands of this world most people take better care of a vehicle than themselves.
Good luck