Prescribed clonazepam 0.5mg for sleep, only took 1. Can I just stop taking since it was just once without problems? Want to sleep without medication.

Klonopin (clonazepam) . Yes. U might try sleep hygiene and melatonin if still cannot sleep, after talking to your doctor.
Clonazepam. Yes. Of course. I like how you think. People who take sleep medications often become addicted and/or obsessed about their sleep and soon do not realize they have lost the natural ability to sleep.