The idea is that you are on your own and you do not need any assistance from anyone. Thus, when you are successful it is because you are in complete control. It is an illusion to believe that one can control or at least influence outcomes with total certainty.
Have you noticed that no matter how many times you have done something there is something new to discover? Some things might seem to be easier or more difficult than previous times. Or you might discover there is an easier way to do it. It is important to remember that there are infinite answers greater than the issue at hand.
The juxtaposition of letting go of old patterns and behaviors and integrating new patterns and behaviors is sometimes a delicate process. The old patterns and behaviors need to vacate before one bring in new patterns and behaviors. This process can seem like a part of oneself is dying before the new has come in. While the new is what one wants and yearns for, it is sometimes a challenging and precarious process.
The greatest discovery anyone can make is that you can do what you think you can not do. The greatest bars are barriers you are up against is your Self. You put the bars and barriers there and you can take them down.
The truth is you are good enough, because you are who you are, and who you are is good enough. The question is what prompts someone to have a ‘not good enough,’ belief? The beliefs you hold about yourself are the indoctrination and conditioning you experienced growing up.