I sure don't have any 'words of wisdom' to share on this - but I have been right where you are as well. It sucks. It's hard. And those that haven't lived it won't understand just how overwhelming it can all be.
I didn't give up, and I healed from my infections - only to have my infections not be done with me quite yet. It's believed that I have autonomic damage done to my cardio system from having Lyme for over 30 years untreated. I live with blood pressure spikes into the stroke zone regularly and must take rescue meds now. I didn't sign up for Lyme 2.0 or whatever, but here I am. I am determined to live the best life I can, even if I have to struggle through it. For me, it's come down to mindset. I'm just not done here on earth yet.
Oops, not so uplifting, but it IS honest!