The minute you learn something, turn around and teach it to others.
Don't think of your website as a self-promotion machine, think of it as a self-invention machine.
Every new idea is just a mashup or a remix of one or more previous ideas.
Be nice. (The world is a small town.)
The thing is: It takes a lot of energy to be creative. You don't have that energy if you waste it on other stuff.
It sounds a little extreme, but in this day and age, if your work isn't online, it doesn't exist.