This is like a phenomenon to me. I feel as if I change so rapidly. I am never the same person, only partially and on a general level. When I occasionally meet up with acquaintances or old "friends" I haven't seen in a while, I feel like I am the only person who thinks and acts differently as opposed to the way I used to be in past relationships with these people. I guess one can never really tell if anyone else has changed, since you are not living in their heads, yet it feels to me that I actually express the change I have been through. A lot of people I used to hang out with or know from in high school are still the same immature, selfish people with the same habits, the same problems, and the same thick-skulled ideologies.