So, I am working my way through Rock Fundamentals 2 and I can not figure it out how to do a "pinch harmonic." I've even tried watching a few You Tube videos and I just can't get the sound everyone else seems to get. Is there some special trick I am missing here? Any good videos or ideas out there? How important is this if I just can't seem to master this?

Thanks for your help! This is just very frustrating, especially when I feel like I've been on a real roll lately with my guitar playing.