Music, memoirs and even poety can become a battle cry. I took the time to look up everg song either the music itself or lacking access without it, the lyrics had to do. All spoke to me in some way. For me, Pink Floyds album has a tune "Comfortably Numb" is not so much a song I draw courage from but an excellent descriptive of how I feel about having CF. The ancient poem INVICTUS, the complete version version is my battle cry. Natalie Merchant's "Wonder" hits close as talented doctors missdiagnosed my CF for fifty years. A quotation I also draw on is worth sharing;
God or the great whomever has been so lavish in his gifts that you can lose some absolutely priceless ones, the equivalent of kingdoms, and still be indecently rich. --Wilfred Shees.