How do I get into the habit of taking the stairs instead of the elevator?

How can I develop the habit of taking the stairs instead of the elevator on my way home from work?

I always feel inclined to take the stairs because I heard that walking up to 3 or 4 flights helps with weight loss, but since I'm tired after work...

He found himself pressing the elevator button without even realizing it.

Trying to climb the stairs after being exhausted all day

My body feels heavy and willpower alone isn't enough. What would be a good way to start by changing the habit of standing in front of the elevator?

Please share any tips on starting with very small goals instead of setting high goals from the beginning, or any personal know-how you have for naturally incorporating stairs into your daily life!