What to do, if you didn't planned correctly and your plan is crashed?

Nothing serious: no accident, no new stuff, only not enough thinking, that happened with me yesterday. Very carefully written plan, which was wrong. Why? I planned a task for next Monday. But this task was a precondition for a task I planned for yesterday, what have a deadline for tomorrow. How silly. And? What can I do? Reschedule! Put off everything else and make the task planned for Monday, and what a task? A big one, of course.

This is how my yesterday turned out, a lot of tasks unfinished.

This was my original plan for today:

I took two post it notes to write a new list with the tasks I thought this morning I want to finish today. I don't care about the other things written originally here. If I'm done with the post its, I can move on to this.

I have no idea, what I will finish today, so I didn't wanted to schedule the unfinished tasks from yesterday (but I wanted to clean up that page), so I wrote everything only on an other post it. When I make my daily review tomorrow morning, I will decide, what I want to do. I will move that post it until I have on that any task.

Let's go back to my list on the two little post its! :)