I guess I better put everything under spoilers as well x3
SPOILERS
That is so beautiful the way you describe it as being a sort of letter to your past self! I've certainly been in that place, and in many ways still am >.< but I'm slightly wiser and slowly learning better ways to deal with everything. And I'm so glad that you're in a place now yourself where you can look back like that.
I really love that Haze is also a character of their own :3 It's completely unrelated to a lot of the stuff I talked about feelings-wise, but I was so wrapped up in splurging all that that I completely forgot to mention just how much I love Haze's character design! It actually reminds me a little of my favourite summon ever from a video game. The spiritmaster's wind spirit summon from the MMO, Aion. Only they kinda ruined its look in an update once it got past its 4th stage by just changing the design completely instead of progressing with each evolution xD Haze is how I wish they had made it look! In fact, I kinda imagine Haze as what its final, oldest and most wise form should have appeared as.
This was the concept art. Then this is how the final form looked at the time I played the game most. And then this is how they butchered it in an update for the new final form. It's not even the same creature anymore T_T Give me something like Haze for the final form instead, darn it!
And heck, you definitely described it the most eloquently because you made a game where that feeling really struck me! I think it'll linger in my memory for quite some time to come :3