Word for “having intension to do something, but do not know where to start”

Question

Sometimes I feel like doing something (let's say writing an article about the lovely weather today) but I do not know what to write. How to describe this phenomenon?

You have the intension to do something, but you do not know where to start.

Answer 1

You might say you are blocked, frozen, at an impasse, or at a loss (“unable to know how to act or what to do”).

If it is due to lack of knowledge, consider clueless; if due to lack of direction, rudderless or drifting; or if due to lack of insight, uninspired.