Quit!

You should quit if you're on a dead-end path. You should quit if you facing a Cliff. You should quit if the project you're working on has a Dip that isn't worth the reward at the end. Quitting the projects that don't go anywhere is essential if you want to stick to the right ones. You don't have the time or the passion or the resources to be the best in the world at both. - Excerpt from the Dip by Seth Godin