That feeling will pass soon enough. I am one of a group of about 12 women who belong to a charity quilting group. When someone decides they have too much fabric to justify buying any more, they bag up fabric and bring it to our group. Then it seems like Christmas has come again at our next meeting. It becomes hard to quash the frenzy. It will look like it's blue light special time. Some stay to watch the frenzy, and when they do, they enjoy watching a bunch of old ladies going crazy over their donations.
If you feel guilty about having too much fabric, load it up and take it to your local charity quilting group...then stop at your favorite quilt shop and buy without feeling guilty.