Two people decide to climb the same mountain.
The first starts immediately. They bring little equipment and do almost no research. Every difficult section is a surprise, but they keep moving and solve problems as they find them.
The second studies every route, buys equipment for every risk, and waits for the right conditions. The more they learn, the more dangerous the climb appears. They never feel ready enough to begin.
The first person may fail because they did not prepare. The second has already failed because preparation replaced action.
Most new projects create the same tension. Starting too early can waste time and money. Waiting until every risk is understood means never starting, because some risks become visible only after the work begins.
Prepare enough to survive the mistakes you can predict. Then start while you still have something left to learn.