Never venture out of your depth until you can swim.

Do not take on a challenge that exceeds your present abilities before learning the skills needed to handle it safely. Confidence alone is no substitute for competence.

The image of deep water makes the risk of premature action vivid: when a mistake could have serious consequences, preparation should come before exposure to the danger.

Use this proverb to counsel preparation before someone accepts a task or risk beyond their current ability. It can encourage learning and gradual progress without ruling out the challenge altogether.