80% of procrastination can be cured by doing 20% of the annoying work first, then letting momentum finish the rest
The 80/20 rule also applies to procrastination. 80% of procrastination can be solved by the first 20% of work. Consider the process of paying your bills. If you find envelopes stacking up on the table by the landing, it may help to put a letter opener there and to make a rule that nothing on the table shall remain in an envelope. You tell yourself that you don't necessarily have to pay all the bills right then and there, but that at the very least, you'll unmask every piece of mail, throwing away the envelope and throwing away the bundled promotional spam, leaving just the bill on its own.
Once you do that, the bill has a much greater chance of getting paid. It may even get paid right at that moment since you've created a tiny bit of momentum already to continue and finish the rest of the task.
But if those unadorned bills still sit on your table, you can apply the 80/20 rule again, and simply bring your checkbook to the table. Tell yourself that you're not making yourself pay the bill right then and there, but getting supplies ready for when you're in the mood. The process itself is often enough to get you to fill out the fields and send the check right then and there.