Deciding not to swim against the current.

     It's amazing how, some lessons, we have to keep re-learning.  Self doubt never goes away no matter how many seemingly world-shattering events we've pulled ourselves through. Friends grow apart and it's always surprising. 
Every group of friends I've had, however seemingly perfect in it's entirety at any given moment, ends up splitting, sectioning off, and eventually fading out. When things are so great in any given area of life it's easy to forget that it won't be that way forever, or even long at all. What seems like "normal every day life" becomes a memory so fast I'm often left wondering what the hell just happened, especially when faced with expressions of a friend "wanting things to go back to how they were." 
I want to ask them, "How do you ever expect that to happen? People grow in different ways, evolution is inevitable. Nothing can stay." while a nostalgic part of me also wants the same thing.

This is extra motivation to live each moment as though it is new, and treat each interaction as though it may be your last with that person because it often will be. 
Interpersonal dynamics are about as easy to pin down or define as the wind. Every subtle gesture or subconscious attitude shapes these infinitely malleable relationships. Our neurons mirror each other, our moods and consciousnesses are in a constant state of exchanging information whether we're aware of it or not, we are all more impressionable than we'd like to admit.

"Here’s something most people don’t know about the human mind: It’s ridiculously easy to make literally any piece of unreasonable bullshit make perfect sense, to make any conclusion look solid, to rationalize things beyond recognition. All it takes is belief. Believe in something, and your mind will fill in the blanks with the necessary info to make it look like it’s true, no matter how untrue it is." -Manimal

For these reasons I will treat each being I encounter in the most conscious and present way. I won't let my brain go on autopilot and start making all kinds of associations based on that person's behavior of the moment or something they said. I will treat each individual moment and each individual as simultaneously unique and tiny pieces of the unchanging whole. Change is unchanging.