Courage may come from confidence that you feel like you can handle anything; or desperation that you feel like you have nothing left to loose. The courage I am talking about here is coming from one who does not fear change and loves the unknown.
Often time, we are conformed to social conditioning and formal education that makes it difficult to trust the unknown. You have to catch yourself from falling into habitual thinking, the way we were taught or raised to think of certain words or situations. But when you catch yourself, and give yourself a moment to reflect and possibly change your perspectives... It changes everything else as well.
The very first part of making a change is deciding to do it. Then taking that first step. That takes courage. Determination takes over from there. As with many things in life, I wonder what would happen, if we changed the perspectives of things. Choosing to embrace or embark on things differently.