Applies to many things...exercise, eating right, flossing, quitting smoking.
Many who are diagnosed with a possibly smoking related cancer quit at diagnosis.
My husband quit 4 months before his diagnosis of treatable, curable throat cancer.
He's really happy that he quit then instead of at treatment because treatment is a kicker and trying to kick the habit simultaneously would be hard. Many do though.
Fear can create strength in all of us.
Let it.
Best Wishes...
.