By planning for tomorrow, I can deal with the stuff that changes, the things that get in the way of my overall goal.
I can roll with the punches.
But that's not enough.
Every week, I look at my month's goal and update the next week's target.
Every month, I look at my quarter's goal and update the next month's target.
Every quarter, I look at my year's goal and update the next quarter's target.
You get the picture.
The reason plans fail is because they don't reflect what's actually happening in your life. So take action and revise them regularly, starting from tomorrow, moving to five years, because that way you can make sure the plan stays relevant. And you keep heading in the right direction.