Sometimes it is hard to know when you are sick. For those of us who suffer from allergies, the symptoms of allergies can often mimic the symptoms of a cold. Either way, the result is the same: you feel crummy. Same thing with skin maladies -- you just feel crummy when your body is not in total health.
You want wholeness.
Sometimes it is hard to take your medicine. Naaman had trouble following the instruction of the healer. Who wants to wash seven times in a cold, nasty river? And Jesus' leper likewise had trouble following instructions. The hardest part for him was presenting himself to the priests, because it probably meant an uncomfortable confrontation.
Wanting wholeness is not always easy.
Paul exhorts us to train for wholeness. The trouble with training is that it makes you sore. No pain, no gain.
Illness is an opportunity for healing. I want wholeness, and all that is implied in the theology of wholeness, if it fits me to serve.
Thy Kingdom come, Thy will be done, on earth as it is in heaven.