In life, you get to decide what bus you want to get on. Where do you want to go? What do you want to do? Who do you want to hang out with? The first thing to do is set your intentions.
Next you need to figure out where this bus picks you up and when. You need to make preparations and ready yourself to be at life's bus stop on time so you can catch the ride to where you're going.
Lastly you need to show up. If you arrive late, then your bus might pass you by. Life's bus doesn't bother to look behind while you're chasing after it. The bus doesn't stop for anyone. It just keeps rolling on.
The Other Method
Alas, if you didn't make a decision on your intentions, prepare, or show up on time. Life will always bring another bus along. It might not be the one you wanted but this can be fun too!