Price is always going somewhere specific: an old high, or an old low. The draw is that destination — not a direction you feel, a level you can point at.
What a draw is — The level price is being delivered toward, chosen because orders are resting there. It is a destination, not a shape — it says nothing about the route.
Why it decides everything — The same setup is worth taking or worth skipping depending on whether it points at the draw. Context is not a mood; it is which side of the chart is being reached for.
When it changes — The moment the level is taken. A draw that has been reached is spent, and continuing to trade toward it is trading yesterday's reason.