Winners quit all the time. They just quit the right stuff at the right time.
We've greatly exaggerated the risk of sinking, without celebrating the value of swimming.
Your audacious life goals are fabulous. We're proud of you for having them. But it's possible that those goals are designed to distract you from the thing that's really frightening you--the shift in daily habits that would mean a re-invention of how you see yourself.
The best experiences and the biggest ideas don't fit into a category. They change it.
The only thing worse than starting something and failing... is not starting something.
In a long distance race, everyone gets tired. The winner is the runner who figures out where to put the tired, figures out how to store it away until after the race is over. Sure, he's tired. Everyone is. That's not the point. The point is to run.