Any older tops have advice for a top dealing with physical size insecurity?

{"document":[{"e":"par","c":[{"e":"text","t":"I'm an exclusive older top that's extremely attracted to the idea of size contrast between myself and my bottom. I like to be this big, strong, imposing Top. Contrast in general between me and my bottom is the main attraction that pulled me into same sex relationships. "}]},{"e":"par","c":[{"e":"text","t":"The problem is I'm a small man. I'm 5'9 and currently 185 pounds and muscular. When I was younger I thought all I had to do was weightlift and get bigger and pack on muscle and I'd be a big strong man. But over years, I've learned at my height, the ability to be this big, muscular imposing top is just not possible. "}]},{"e":"par","c":[{"e":"text","t":"Do any older tops currently deal with this insecurity or have dealt with it in the past? Any advice on how you were able to conquer it? Physical changes or mental adjustments?"}]},{"e":"par","c":[{"e":"text","t":"Any others struggle with similar notions?"}]}]}