The beginning does not owe you certainty.

Beginnings are structurally uncertain, because the information that would resolve the uncertainty comes from having begun. Demanding certainty first is asking for the output before the process, and the demand can never be satisfied. The discomfort is not a warning, it is the shape of starting.

When you notice yourself waiting to feel sure, name what you actually need to know and whether it is knowable now. Then act on partial information, which is what everyone is doing.