As we go through life, we distinguish as clearly as black and white between the good and the bad - we learn to do this from a very young age as we are trained by our well-meaning environment to become an individual who fits in with the expectations of the system and those around us. So our beliefs about what is good and what is bad are deeply ingrained in us and form the basis of our habits, behaviours and choices we make later in life.
There is a book “Power Thoughts” by Robert Schuller. In it there is a chapter “Saying Yes to Your Dreams”. Here is what it’s about...
What one thing would you do if you could not fail? Write it down in capital letters. Even if it seems odd or silly to you and your mind starts arguing for limitations as to why it couldn’t happen, just write it down in capital letters. Let your imagination run wild. Then, take a good look at what you’ve written down in capital letters.