Having trouble divorcing athlete identity

I am having a really hard time letting go of this identity I have as an athlete. I’ve been an athlete since I was 6 years old. I am injured now to a point where moving isn’t in an option like I used to. I am in the midst of drastically changing my career as well. Nothing feels stable or sure. But most of all, I feel so incredibly not easy having that thing to look forward to in the day. It’s like I have nothing to REALLY look forward to without it. Working out has always made me feel alive, worthy, motivated, and even talented. I am having so much trouble without it and I don’t want to be. I logically see that this is the step for me to live a pain-free life as a lifestyle (not competitive) athlete and trainer, but I feel so heavy and low everywhere.

Where do I start to tackle this? I’ve overwhelmed myself with fixing what feels like a problem but no clue how to approach it. It all feels like one huge obstacle. I just want to feel better.