Once you're up 30 feet, any higher doesn't really matter.
That was the mindset I used to overcome any fears when I worked as a steeplejack. Which was the company I worked for when I was working on that bank.
Then as i got older I began to consider that while higher doesn't matter result wise. It does give you more time to think about it on the way down.Ive had ladders drop out form underneath me. Under 20 feet it happens so fast you hit the ground before you realize you fell.