I feel this way a lot too these days so sometimes I will pretend to be a character from a movie who is overly extroverted just for a few minutes of the day and during those minutes I force myself to pretend to be approachable and talkative. I can only keep it up for about 3 minutes at a time and then the battery runs out but it is like practice.

Β―\_(ツ)_/Β―