The biggest lie we tell ourselves in the area of action is, I'll do it later. We should avoid procrastinating and just do things when they need to be done. Postponing tasks won't help anybody and just wastes time.
We don't know what tomorrow holds for us. What if something happens and we don't have time the next day?
Putting things off is unwise. If you can do something now, do it. If something doesn't get done, schedule a specific date and time to do it.
If we're not careful we'll never get to all those things we put off until later.
The burden of things left undone is a heavy load to carry, so just do it.