Have you ever felt like you're losing someone? Like, having known someone so well and suddenly realizing that you don't know that person anymore? You think about the 101 different possible reasons, but in the end, you just come down to the conclusion that maybe that person is going to a complete opposite direction and you're not willing to follow.
I'm still the same old me, yet you are no longer you. Maybe it's the company you keep, maybe it's the environment that's changing you. But you are responsible for your own action, and regardless of the people around you, you are the one making decisions for your own life, and nobody else is in charge but yourself.