What does 'Start by doing what's necessary then do what's possible and suddenly you are doing the impossible' mean?

This quote suggests that achieving seemingly impossible goals begins with taking small, essential steps. By focusing on what is necessary and gradually tackling more challenging tasks, individuals build momentum and confidence. Over time, these incremental efforts can lead to significant accomplishments that may have initially seemed unachievable. Essentially, it emphasizes the power of persistence and progressive action.