honestly reading stories about how personal newgrounds can be for some people is always nice, as i also had a similar story with this site.
as of the composition, I sadly dont know enough about music to give a detailed critique other than saying i really liked the dynamics you used, it conveys the feeling of starting a new activity, gradually becoming better at it and being overcome with passion for it to then return to a feeling of peace, not in a sense of losing interest but to show that even though the inicial outburst of passion is gone (or there's not enough time to indulge in creative works like in the past due to real life issues, but maybe that's me projecting too much here :P) there's still some enjoyment in returning to it very nicely.
also I loved the choir in the climax at 2:44, I love choirs in music in general.
if anything the electronic section near the end felt a bit out of place in terms of instrumentation (but not armonies) and the guitar segment at the end also felt a bit out of place even though less so than the electronic one