Fear is the signal that you’re on the great path to something.

"It seems that given two paths, the survival instincts of your lizard brain will choose the path of least resistance. The path that ensures the status quo (assuming that’s safety). The path that keeps you home at night, going to your office job, watching television, playing video games.

...

It’s OK to get sweaty and nervous when you think about the monumental challenge in front of you. Fear is just your stupid lizard brain worrying about it’s own primitive, nearly irrelevant needs. Fear is not the signal that you’re doing something wrong.
Fear is the signal that you’re on the great path to something."

-- Hey Lizard Brain! It's OK to Be Afraid, Keith