If you look back, you slow down and they catch up.

If you look down, you'll trip over a lot of trash thrown your way.

But if you look up, you will always see the endless sky. That tight feeling you get when you start something new. The burning muscles during training, the lump in your stomach during an im-portant meeting, the feeling of hunger during a diet: these may seem like sig-nals to stop.

The majority - with almost negligible exceptions - save themselves from life. They tiptoe through...