fitting in, or not

The other day I pondered fitting in. It seems things have not changed that much since high school, where I was neither in nor out of more than one group.
I was on the swim team, but did not really socialize with them. This was the only group I was really "on".
It was a strange time, and strange high school. Our home room had 10 our of 27 students pictures missing, which was not unusual for the school or the time.
The only other picture of me is sleeping, in the library. Not sure who took this picture.

And I wonder, was my high school experience training for my life as it's played out today. I am still not apart of any group. Art, interior design, work, etc. In the grand scheme of my life I am just occasionally hovering, never a full member.