If you want to be a bad product manager, ignore some of your stakeholders. If you want to be a good product manager, remember the stakeholders that everyone else forgets.

If you want to be a bad product manager, ignore ideas that have been tried before. If you want to be a good product manager, revisit ideas from the past to see if they are applicable now.

If you want to be a bad product manager, rely solely on technology to communicate with coworkers. If you want to be a good product manager, communicate in person as much as possible.

If you want to be a bad product manager, manage an existing product as if it was a new product. If you want to be a good product manager, understand that an existing product needs to be managed differently than a new one.

If you want to be a bad product manager, keep answering the same questions over and over again. If you want to be a good product manager, try to never answer the same question twice.

If you want to be a bad product manager, don’t get caught up in all of the hype around the iPhone. If you want to be a good product manager, see what lessons you can learn from the iPhone.