The colloquial expression, “the straw that broke the camels back,” lacks the power of, “For all the promises of God in Him are Yes, and in Him Amen, to the glory of God through us” (II Cor. 1:20).
An expression of exasperation might feel good in the moment of pressing, but the promises of God have power (Phil. 4:13).
Trust the promises of God, He stands behind every one.
Be well. Shalom.