Improv lessons. Seriously. Being confident speaking in front of others and the life lessons it provides ("yes, and") are absolutely indispensable. It brought me out of my shell and advanced me in my career significantly, all while having fun and making friends.
would you recommend it for someone who's generally not witty and takes at least 5 seconds to answer someone they don't know? basically i'm slow as hell in interactions, especially to new acquaintances.
Improv Comedy classes. In any decent-sized city, there is probably at least one comedy theater, and one or many improv groups at each. Some of them offer classes to get into improv comedy. I can recommend a couple in my city (Charlotte) but if you poke around a bit you should be able to find something near you.
