Welcome to the forums, pianopenguin!

Good stuff from everyone. Only a couple other things come to mind atm. One is journaling. I've written notebooks-worth of stuff just to get it out of my brain. It helps at least some.

The other thing you can do, if you do want to write to your advisors, is to write, but not put their name in the "to" field (makes it easier not to accidently send) and write all you like, but then don't send. Read it at a later point (a day later, at least) to see if you still feel the need to send it. It can save some "oh, I wish I hadn't sent that" situations.

And by all means, feel free to write here. It's a nice bunch, and we're all in this together.