In a comment to Kellsey's great Rhythms post, a friend of her's, Nancy, tells her that a mutual friend of the two of them, a young woman, has died of cancer. Nancy writes:
[Sandra] would have been 31 on June 30. After fighting cancer for 3 1/2 years, she is no longer in pain. A week before she passed she said that God was telling her to put down the boxing gloves. Now she is celebrating with her dad and our Heavenly Father.
(Nancy solicits prayers for Sandra's family.)
Such a poignant metaphor - "Put down the boxing gloves" - especially in the context of a mortal disease. But I would think it applies to everyday life as well. God says, "Put down the boxing gloves, I have plans for you, plans to prosper you and not to harm you, plans to give you hope and a future." See Jeremiah 29.11