People automatically associate quitting with failure, but sometimes that's exactly what you should do. If you already spent too much time on something that wasn't worth it, walk away. You can't get that time back. The worst thing you can do now is waste even more time.

No is easier to do, yes is easier to say. No is no to one thing. Yes is no to a thousand things. No is a precision instrument, a surgeon’s scalpel, a laser beam focused on one point. Yes is a blunt object, a club, a fisherman’s net that catches everything indiscriminately. No is specific. Yes is general.

you can brainstorm, you can argue, you can survey, but only shipping will tell you whether you’re going to sink or swim.