I feel your pain lol. I always carry two bodies with lenses and occasionally 3 but still sometimes seem like I don’t have the right oneone thing that gives me solace, is no matter how much gear I have - it's usually the wrong gear at the time.
I'm shooting with the 400TC, I wish I had the 600TC. I'm shooting with the 600TC, wishing I had the 400TC. Shoot with the 100-400, wish for the 70-200. Shoot with the 70-200, wish for the 100-400. It never ends