Same situation but years ago.
Lately I've been more social then ever and even come away from meeting people more energized then before, when it used to be the opposite.
To get to that point though, I would think back on what was good about my interactions and focus on the good day by day.
Another interesting tool to get yourself more "in the moment" is to focus on your breathing for a second.
And if you realize you compare yourself to others, pull back and remember that you are not them, focus on the experiences available to you in your life, there might be more then you expect.