Workout on weekday mornings. Light cardio and weight training -- just not too strenuous.
Eat clean. Cut out processed meats and white bread. Eat more fruit and vegetables. Rely on potatoes and corn, not grain, for carbs.
Have an AM caffeine cut-off. Drinking lots of coffee not only interferes with sleep, but the crash will drain you. I drink a cup of black coffee on the sh!t can each morning at 6:30AM. That's it.
Drink a lot of water. A lot of fatigue is actually mild dehydration.
Do not drink any alcohol on weeknights. Even one beer will fvck your sleep up.
Do not look at screens an hour before bed. Read a book. This will calm your mind.
It's okay to feel tired and drained after work. You're not supposed to be going right back out to do stuff. You should be winding down. Have something to look forward to. I like cooking, listening to a podcast or a Yankees game on the radio, and reading a good book before bed. If you work out in the morning, relaxing should be the only thing on the evening schedule.