I also have the same problem except all the fabric I have collected is from me - working at Joanne's, Beverly's, House of Fabrics, Fabricland, and retired Home Economics teacher, not including other fabric shops, hospice, garage sales, donations from friends, etc.
What I decided to do is start separate my fabric by color or theme and put them on shelves in my Storage Barn. I found out that I don't have enough room for all my fabric. I ended up renting an additional storage space and purchased many locking, semi-clear storage boxes and labeled them, again by color or theme. I will deal with the storage shed later.
My order of organizing is 1) my sewing room, 2) storage barn, and 3) storage unit. I was hoping to finish before summer was over but, unfortunately, too many other problems/projects happened and my sewing areas were put on the back burner.
I agree with others, one cannot do this by themself so I am calling my sewing/quilting friends. I am going to have a Organizational Party where everyone can help me. Compensation: payment of services: fabric/notions. Hopefully, I can get this done by the end of this year!
Good luck and have fun.