Stick with a project because you love the project.
The worst reason I can think of to stick with a project is money.
Know when to quit a project—or at least when to put it on hold.
If handled correctly, a lapse in judgment can lend depth to a character.
A writer can get the most out of a writers conference by forgetting about the agents and the pitch and concerns about getting published.
One thing that the writer of fiction needs to be able to do on occasion is move forward through time in a fairly quick manner.
What really makes us identify with characters is the fact that they’re flawed.