Name the fear as specifically as you can. What exactly are you afraid of? Does naming it change how it feels?
Separate what is within your control from what is not. Which category holds most of your attention? What would it mean to act on what you can and release what you cannot?
When you consider the idea of reliance on God (tawakkul), does it feel like relief or like giving up? What would it mean if it were something between the two?
What is one thing — very small — that you can actually do today? And what is one thing that must be released to God, because no amount of anxiety changes it?
How much of your anxiety is about the outcome versus the process? What would change if your attention shifted from what might result to what you can do well?