Self-Discipline: Hard Work
stevepavlina.com
stevepavlina.com
If you are working hard on something you care about it doesn't seem at all like that. It may not seem like it when you are sitting slack-jawed in front of the TV, but if you turn the damn thing off and go work on something, you'll be 10 times happier.
We can work either which way depending on situation or motivation etc.