How do I safely withdraw from Klonopin?

The first step is to inform your Dr. so you can stop gradually (in order to avoid/minimize withdrawals which can be very unpleasant from any benzodiazepine) under medical supervision provided by a discontinuation schedule from your prescriber.
The length of time to discontinue Klonopin (Clonazepam) safely is different for everyone, it will depend on how long you have been on this benzo and the dose you were on ( and other factors your Dr. will inform you of).