How to ditch your 'It's not gonna work out' mindset?

You have to accept MAKING MISTAKES. Cast out fear and try as often as possible. That's it! There is no other way to realize that you make mistakes to learn from them. We make mistakes all our lives long. You can only lie on the couch and watch soap operas unmistakably. In case someone is doing something, growing, moving, exploring the world and his possibilities - it's absolutely OK TO MAKE MISTAKES!