When I got sick I adopted the serenity prayer, which is used by AA. Something weird about a long term teetotaller and advocate of total prohibition using their creed but works for me.
God, grant me the serenity to accept the things I cannot change, courage to change the things I can, and wisdom to know the difference. https://en.wikipedia.org/wiki/Serenity_Prayer#cite_note-FRS-1 [1]
regds roz