The biggest barrier

No, this isn't me.
I'm about that size, though

It has been four days since I joined the gym, but I still haven't gone. I fear workout clothes. Yes, I do. More than that, I am avoiding something that my house lacks but is ubiquitous in every gym: full-length mirrors.

The only time I use or dare to even look into a full-length mirror is when I'm trying on clothes in a store dressing room.

Having to even catch a glimpse of myself when I'm exercising is so repugnant to me that it's actually stopping me from going to the gym.

I know this is a mental problem, but I haven't been able to get past it for about 20 years. True.