Bar Soap and my lifelong struggle

First off, thank you OT for taking this post. I didn’t know where else to turn. I was raised in a conservative family and taught the value of not wasting. I have tried to live that by not throwing out a bar of soap in the shower before it is done….adamantly using it until it basically down to a grain of sand. As the years have passed, I’ve gotten heavier and harrier. So many issues….I lose control of said soap, drop it, and even lose small pieces in my man mane. I’ve tried to fight the good fight, but I have grown weary.

Therapists of the OT, what should I do? Do I continue and honor the traditions of my childhood or can I throw away the soap before it gets too small? What is small anyway? How do measure that? It’s just too much. Thank you for your help on this important issue.