I sometimes recite to Salma a "choosing" rhyme that I learned as a kid:
If the train goes off the track
Nevertheless, in the short run all you get is a pile of tangled metal.
Derailment happens in many ways. You get caught up in the mundane realities of life - work, bills, debt, family - and lose sight of your dreams. Or God presents you with special opportunities and you reject them out of fear of the unknown. Or you suffer an unexpected loss. Or betrayal, that's a big one, especially if it is perpetrated by someone close to you. That's explosive on the tracks. It shakes the ground beneath your feet. So you lose faith in God, or in yourself, or in the world around you, and BOOM, engine engine number nine goes crashing off the track.