To dream that you are climbing up something (ladder, rope, etc.) represents a hardship or obstacle that you are being confronted with. It may also mean that you are close to achieving your objectives. Climbing also implies that you are being elevated in your importance and status at work or community.
To dream that you are climbing down a cliff implies that you are reluctant to confront certain emotions and issues in your life. You need to recognize these matters and deal with them accordingly. This dream may also indicate that you are in a depressed state or feeling mentally fatigued.