I’ve done a working at heights course and it was fine
Absailed down a 10 story building no problemo.
It’s a mental thing, because I was full harnessed. As the instructor said, you set up your harness, your safety mechs and how far your no access zone is
If you’re happy, then nothing will go wrong.
And if something does go wrong, you will literally eat your own asshole and end up looking like a human pancake and die.
Wise words to live by