I think I used to be pretty mentally quick before I isolated myself from my friends and real socialization for the past 4 years and over that time period my mental quickness has somewhat deteriorated. I'm wondering if it would just be a matter of rustiness and my quickness would come back after say a month of socializing or if it's going to be as if I had never been mentally quick to begin with and I'm starting back at square 1. Is this something you guys have improved at?

Edit: Thanks for the help, a lot of good advice i hadn't thought of. Good luck to you all!