Reading it makes me think I can do it.
The Smiling Robot was very sad. "Hey, — he said to himself — You're a Smiling Robot, why should you be sad?"
"Damn, — he said to himself, — I'm talking to myself. Only losers do". That made him even more sad. He also wondered if he can use the word "Damn" if he wanted to be a star of kids' book.
Every gear in his body, every screw, every 3D-printed detail of uncertain shape which didn't even have a name but fit just right was sad. He wondered if he should get them replaced. He then wondered if he replaced them all would he still be himself — the Smiling Robot. He wondered if he should stop wondering and maybe get wandering to ease his sadness a bit. But he knew the truth — the world outside wasn't very uplifting. So lifeless, robotic it has became that the remaining people had to create him, the Smiling Robot, to raise their spirits. But now he, too, was sad.
How did I do?