I find that muting is quite possibly one of the best tricks in guitar playing, along w/bending. You can change a songs sound just by muting a few strings. Unfortunately some people use it a little too much today. I found out how to mute by accident, and i just kept doing it over till i got better at it. That may be the only problem is that you need to practice it more, or find your sweet spot on the bridge to mut it. Just keep practicing, i promise it will get better.