Movies
...baby steps get on the elevator... baby steps get on the elevator... Ah, I'm on the elevator.
— Bob Wiley • What About Bob?

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
This is a person coaching themselves through a nerve-wracking task by breaking it into tiny steps, repeating the mantra until it works. The relieved 'Ah, I'm on the elevator' is funny because such a small achievement is celebrated like a victory.
Context reviewed