Burnout is life's way of telling you that there is something out of balance. While it can manifest as exhaustion and feeling overwhelmed, I have found the tell-tale symptom to be indifference. It may feel like your heart is just not in it anymore.
A Health Crisis has a way of getting your attention about what is really important to you really fast. While attending the your health is primary, there are typically many additional gifts about how your life may be out of balance and not aligned with what is important to you. There may be an opportunity to heal much more than the specific health crisis you are confronted with.