Surrender can be honest and slow.
Letting go is rarely as simple as saying the words once. You may release something in prayer and feel the worry return ten minutes later. That does not mean you failed. It means you are practicing trust in a real human heart.
Surrender is not apathy. It is not denial. It is the act of telling God, "This matters to me, but I cannot carry it as if I am the one holding everything together."
Sometimes surrender looks like choosing not to rehearse the same fear again. Sometimes it looks like taking a practical step and leaving the outcome with God. Sometimes it looks like asking for help because carrying it alone has become too heavy.
You can open your hands without knowing exactly what happens next. God can sustain you in the process, not only after the answer is clear.