The sun is intelligent because it never rises too early, and wise because it never sets too late.
The early bird gets the first worm, but the wisest bird gets the fastest one.
Arriving on time for your engagements demonstrates preparation, respect, integrity, and enthusiasm, all of which serve to make a positive impression on the people whom you are meeting, especially when they are depending on you—or paying you!
When you have scheduled an appointment, or have made a commitment, you have essentially made a promise. Keep your promises. Being punctual demonstrates your consideration for others and that you can be depended upon.
When beginning a conversation, ask the other person, “Do you have time to speak right now?” If they say no, you can say, “I have some valuable information to share with you. What time would work best for you?