Some good thoughts here. It can definitely be a challenge to walk away when you have put your all into something, but I would absolutely agree that quitting is often not a failure. I think it can definitely take more guts to walk away than to keep banging your head against the same wall over and over for fear of change. Though I would say personally, I'm usually more fearful of starting something because I don't like to be bad at anything, so it's tough to quit if you don't even get started. I'm working on that, though. ;)