Because who needs to be on time, anyway?
Just tell yourself that you'll get to it eventually. You can even write it down in a to-do list, just to make yourself feel better.
Find an interesting distraction, and just keep finding new ones. The key is to not get bored.
Because who needs to be productive when you can just do one more thing first?
Identify a task that's somehow more pressing, but not too pressing, so you can still justify doing it first.
Turn the task into a game or a challenge. This will make it more enjoyable, and therefore, more doable.
And that's it! Now you can finally get to your original task. But don't worry, you can just put that off until tomorrow, too.