Finding words for that leap into the unknown always brings me back to Mary Oliver. That line from 'The Journey'—'One day you finally knew / what you had to do, and began'—hits different when you're staring down a blank page, literal or metaphorical. It's not a grand pronouncement of victory; it's the quiet, internal click of a decision made. The fear doesn't vanish, but the 'and began' part acknowledges you move with it.
I also lean on a less poetic but brutally honest one I saw scrawled in a used copy of 'Bird by Bird': 'Almost everything will work again if you unplug it for a few minutes, including you.' It reframes 'starting fresh' not as some monumental, perfect rebirth, but as a simple reset. The canvas isn't blank because it's empty, it's blank because you cleared the old, faulty wiring. The fear feels smaller when the task is just to sit quietly and reboot.