Being attached to something, making something is always a problem. Zen means put it all down. Don't make anything. If you meet God, kill God. If you meet Buddha, kill Buddha.
All sickness comes from the mind.
If mind disappears, sickness disappears. If you put it all down, there will be no sickness, and you attain freedom from life and death. But it is hard for us to let go of our mind. You often suggest different mantras to help different people. According to Mahayana practices, if you try certain mantras, certain bodhisattvas will help you.