A really good way to feel excellent is to combine good food, fresh air and exercise, and get plenty of sleep. It's very hard to eat a perfect diet, so people take a health food vitamin daily that provides excellent nutritional supplementation for what may be missing in the diet. Walking or some other form of daily exercise helps with weight management, and is a good way to feel excellent for hours afterwards. While some people combine an exercise regime with a healthy diet to feel excellent, often they do not get enough sleep, and that is detrimental to their health.
A good night's sleep is a wonderful way to improve one's performance in just about everything that you face daily. Sleeping well is so important, and sleeping long enough is the key to enjoying life, because sleep deprivation is hard on a person, physically and mentally. If you can get sufficient exercise and healthy food, and enough rest, you should be able to feel excellent all day long. The key to being at your best is rest, proper nutrition, and exercise.