Receiving Input from Dilbert

Have you ever done this?  I certainly have.

It's one thing when we take action without the input from others.  It's even demotivating and deflating when we asked someone for input and then acted before hearing their feedback.

Have you ever done this?  Any suggestions on how to make sure to avoid making this mistake in the future?

Here's a link to the comic on the Official Dilbert Website too.