What helps me is to stop thinking about the future at all and stop the 'what ifs' and just focus on what do I need to do next? What is the next right thing?

I know it's hard to do that, but to the extent that I can do that, things go better. Most of the time the stuff I'm worried will happen never comes close to happening, while stuff I never expected does happen--both good and bad.

Your psychologist is trained to help. Hand her the letter and let it go at that. That's the next right thing. She'll take it from there and wherever it goes will get you closer to better! Hang in there!