Back in the late 80s I had a PPL student who was a high-powered businessman, he would arrive in the carpark but sit there for 20 minutes on the phone. And car phones were a bit rare even then.
He walked into my office and said "What are we doing today?"
My reply was "What did you prepare for?"
"Nothing."
"Well then, nothing is what we will do. Come back when you are ready to commit to learning."
He took 70 hours to go solo, then tossed me the keys and said "I will never make it as a pilot, but thank you for getting me this far."