I smoke and drink too much.. and I don't sleep. Chronic insomnia is a bitch and a half.
I think alot of people's problems stem from the fact that they mistake mental tiredness with physical tiredness. When a person is mentally strained, it can have an effect on the rest of the body, but instead of working out or doing a hobby that is enjoyed, they sit on the couch and watch the tube or surf the net. This only increases the miserable effects that a person feels.
I'm a very high strung person, but most people can't tell it. I do a good job of relieving stress and managing my time. My wife on the other hand does not cope well with stress. Granted, she works full time and goes to school full time, but she sleeps way too much on the weekend. When she does start a workout routine her stresses melt away and she feels better but she never sticks with it. Thankfully, it hasn't affected her in some ways such as obesity or anything like that. She's one person who often mistakes mental tiredness with physical tiredness. She'll sleep late on the weekends, take a 3 hour nap in the afternoon and say she's tired. DUH! I try to show her how it works and she's just stubborn like me, so she'll figure it out on her own
My greatest challenge is that I become bored with things very quickly. Once I master something or get good at it, I get bored and want to do something different. This is good in one sense that it keeps me fresh in ideas for production, but it's bad in the routine sense. I never have a set routine and often find that I take on more than I really intended to.