[mrks_]

How I overcame my fear of heights: indoor bouldering.

You can pace yourself with respect to the height you’re comfortable experiencing. It forces you to learn to fall safely. Most importantly, it progressively associates a positive outcome (route completion) with height.

[recursivefaults]

Came to say the same. I joined a climbing gym and its done wonders. Slowly but surely it's making me a lot more comfortable with heights.