Don’t you just hate re-inventing the wheel?
It can be a real drag creating a complex selection area in Photoshop. The only thing worse is finding that you need to recreate the same selection area again later.
Don’t duplicate your effort. Save it instead.
Anytime you have an area selected you can go to the Select > Save Selection menu item to save your selection area for later use.
The next time you need to work on that particular selection area, go to Select > Load Selection and pick your saved selection area from a drop down box.
You can save multiple selection areas in the same graphic by giving each a different name as you save them. This makes your PSD files bigger, but it can be a huge timesaver.