Sorry you’re going through this. One piece of advice I found helpful was to allow yourself to acknowledge what a loss this is to you and process it like you would other significant losses. (E.g., acknowledge how much you were looking forward to the season, as you seem to be doing, and mourn its absence.)
Also, if he’s your cup of tea, Jordan Peterson has two relevant chapters in his new book (I’m just planning to read the second one tonight). Avoiding anger and resentment in the face of misfortune and being thankful in spite of suffering.

I’ve been where you are several times for various reasons. Tore a finger pulley tendon at the beginning of the summer then reinjured it by coming back too fast. I herniated a disc just before ice season and refused to not climb after the training I did. I took a good friend and chiropractor to smack some sense into me. It’s scary when you are 36 years old and can barely walk across your own house.

I too used to get really down and downright depressed about it. I spent all my time thinking about what I’m missing out on and not what could be gained. Things changed for me when I started to refocus what I wanted. I learned the banjo, picked up swimming (great for recovery), read some great books, went to school for computer coding, doing some challenging puzzles. At first those activities seemed lame but even recovered I still do them to balance out my training and I actually look forward to picking the banjo as much as climbing now.

I think it’s great to be motivated about activities and for some of these lofty goals you need to be. However there is a real problem when you assign your sense of self worth to your ability to climb a mountain. There is so much more to being a man or woman than that. The mountains will still be there next year and the year after that, etc. Analyze your training that lead up to the injury and learn from it.

Hope my ranting helps. Just to summarize I’ve been there multiple times and it will pass and you’ll be a better person and athlete cause of it.

Jake.

Of course, if things get really tough, there’s no shame in seeking professional help. Talking to a therapist can be a game-changer, and sometimes medication like https://www.mentalhealth.com/medication/fluoxetine-prozac can be a helpful bridge back to feeling like yourself.