All of us have this fear that prevent us from getting stuff done. We fear that others will laugh and make fun of our idea and we don't want to be embarrassed when we fail. Seth Godin refer to this fear as the lizard brain. The lizard brain is the reason we choose the safe side and stick with the status quo. If something bad happens, at least you have others joining you on the way down. It causes us to compromise on our solutions and sabotage our own progress to keep things from changing. Change isn't part of the lizard brain's vocabulary.
But if you want to do something different, something remarkable, you have to shut down the lizard brain. At least until you ship your work out to the world. You have to learn to ship and ship often. It's fine to have your idea being laughed at. After all, when Twitter came out, many people consider it a fad.
If you want to know more about the lizard brain, watch the video below and get Seth's latest book, Linchpin.