With any new ideas, there is always a certain degree of fear. You need to rethink it as a learning opportunity, not as a failure. If you're not failing from time to time, then you're definitely playing it too safe!
why does fear exist? scientists recently came up with a theory that fear is a way to keep the people from destroying the world it is triggered by a nerve in your body that triggers your brain and tells you what your afraid of it runs in your genes for instant if your mom is afraid of spiders and so does your dad you will most likely be scared of spiders to