When You Don't Live Up to Your Own Expectations

Today I am trying to finish up a project for an organization I am in. I am awaiting a couple of return phone calls and I am hoping to "put it to bed". It should have been done long ago. I am disappointed in myself, there are reasons for the lateness of the project but I continue to beat myself up. So how do you get past something like this? I guess that once it is done, be glad that it is, look at why it didn't go so well and put safeguards in place to prevent it from happening again. And gee whiz - a pint of Ben & Jerry's just might make it better as well.