Hey I think this is a really great song! To me I feel like it should be just a little bit faster. It seems to be just dragging slightly. Also I'm curious, did you play this to a click? I was getting like 140 bpm at the beginning, and then around 135 in the middle, and 137 at the end. If you didn't play to a click, it might be worth it to give it a try and maybe speed up a few bpm. Like 143? Something like that.
I'm getting critical here, but you might also try setting the electric guitar part a little further back with either reverb or volume, that way the piano can sit a little bit more front and center. And I would totally work on getting the whole snare brushes/acoustic guitar thing matched up better, because it kind of reminds me of a train. And that's awesome given that the song is about moving on. Definitely gives it a moving feel.
I like the vocals a lot! Just a couple spots where you kinda lack energy, but I think that would be fixed if you sped everything up a bit. I usually throw some light autotune on just about all vocals to tighten things up, and I absolutely love lots of compression on vocals. My signal chain usually goes, light EQ, de-esser, compressor, autotune, reverb. I would actually love to mix this song. PM me if that's something you'd be interested in.
Anyways, great song!