Hold Your Horses

Photo of  two clydesdales and a wagon
To hold your horses means to slow down or wait for a moment instead of rushing. This idiom is used when someone is moving too quickly or getting ahead of themselves.

The expression comes from the days when people traveled by horse. To hold your horses meant pulling on the reins to stop the animals from moving forward too fast.

Hold your horses, we have not even decided where we are going yet.