I think the key to travels, if not life in general, is knowing when you need to pull the extrovert character out of the bag.
I think in today's world for everyone to have a good idea (whether natural or self-taught) of social dynamics. I am self-taught in that area for the most part, and even now I am learning whilst on the road, when is a good time to bring those skills out in to the open.
As the link below shows, if you don't have social dynamics knowledge and skills available, loneliness sets in, and that's not cool.
This is a deeper look into Introverted Travelling