ttlittlestar, everyone has given such great advice. Lisa, I love your idea of focusing on what can be done.
Are you being treated by a knowledgeable doctor? Which infections do you have? Tick-borne diseases can affect many things inlcuding hormones. Have you had thyroid, adrenal, and hormone testing done? Have you had immune function testing done? Let your doctor know how you are feeling.
It can take time, but with proper treatment you can get better. You will get back to doing the things you enjoy. In the meantime, do everything you can to strengthen your body and immune system.
Do you like music? Lisetning to music can be very healing.
Do what you can do now and know that in time you will get back to doing the things you love. And when you do get back to them, you will appreciate them even more.
Hang in there okay?