Plan ahead to give yourself confidence in your results. Read ahead to make the best of whatever situation you find yourself in. Or you could wing it and wonder why it didn’t work.
If a piano player cares about a performance, they learn the music in advance and then practice like crazy so they go into that performance with knowledge and muscle memory that combine into confidence.
People that really care about the results of a business meeting plan ahead. They consider the context of the meeting in the broader journey as a point along the ever-evolving path.