...and can no longer do any of your favorite things. Your hobbies are now out of reach. I'm not going to give a reason because it all depends on what your hobbies are. Just assume that something happens and you can't do those things anymore. Whatever has caused this may also affect other hobbies you might choose.
So what do you do now? Do you have any idea of where you might look for a new hobby? Would you just deal with the lack of one and sit back until an interest came to you? Search the internet for ideas? Randomly try different hobbies to see if you take to something?
Assume you're not trying to fill a void of time, and in fact time for the hobby is scarce anyway. It's more having something you *do* for your mental health.