In today's world of short attention spans, blaring media, and countless distractions, getting someone's attention is hard work. It may be the hardest work you do, in fact, to cut through the clutter of their lives and responsibilities so they are willingly listening to what you're saying.
Don't squander that rare opportunity, then. Be ready to say what you need to say to move them to a decision.
We can always earn more money; we can never create more time.