It may go without saying, but if you want to live car-free, you have to take care of your body and do your best to avoid incapacitating injuries.
I’m still nursing a bad case of tendonitis in my knee (get out the little violins) that could have been avoided if I’d listened to my body. You’d think that after being a serious cyclist since around 1980 and having many, many opportunities to learn this lesson, I would have paid attention and taken a few days off when my knee started talking to me. But instead of doing the right thing, I attempted to “ride through” the oncoming injury, hoping it would magically go away (magical thinking is dangerous when it involves injuries). Of course, it only got worse until I woke up one morning and couldn’t bend my knee. It’s been 10 days and I’m still off the bike and hobbling around; this one’s going to take a while. I’m still pissed at myself.
None of this is to gain sympathy (I got what I deserved), but to remind everyone to take care of yourselves and pay attention to those little aches and pains before they turn into something that will pull you off your bike and shove you back into a car (screaming and kicking all the way).