Occasionally I start projects too quickly.
Just dive in, head first, let's get to the fun part of creating.
As a result, sometimes I go rushing past the important foundations the creative is built upon, and end up backtracking to make things right. Time and money are lost. I feel like a dork.
I see this on large projects, too. The group rushes to get things built without fully fleshing out what the end needs will be. Costly adjustments have to be made on the fly. Time and money are lost.
The concept of premortem is appropriate for situations like this. At the start, the team visualizes all the ways the project can fail, then attempts to mitigate the various risks. The chances of success rise as a result.
The end should always influence the beginning.