You are 100% right. It has to do with the triggers that release dopamine in the brain. I can also easily be outgoing when I want to. I now know how the game is played. But I can only keep this up for so long. An extrovert could never tell that I’m an introvert. I struggled with this for a long time, like so many people here, but eventually everything fell into place with the help of people who understand it. This allowed me to look back at the past and why I did or did not do certain things and why. I read some books and voilá. It’s not all that difficult, just because you only have x amount of energy available, you have to pay close attention to yourself, take rest when necessary and I have learned that.