Some people are just not suited to physical work. I honestly feel really good most of the time with a mixture of window cleaning,gym,drumming and walking the dog along with a few basic yoga stretching exercises every morning...
The 4 pillars to good health IMO are....
1.good diet
2.sleep(min 7 hours a night for me)
3.weight training 3 times a week
4.keeping stress down to a minimum if possible through yoga/meditation,walking,doing a hobby you really like,paying bills on time and relaxing without having to drink alcohol.