Punctuality is "showing respect for other people and their time."
Being on time takes preparation and forethought. It requires using your time wisely. This means that you do not waste time or allow yourself to be distracted. Prioritize the most important projects or classes and give yourself enough time to prepare. This allows you to keep your promises and make a habit of being in the places you said you would be at the times you indicated.
Being punctual also requires self-motivation. There will not always be other people reminding you when you need to be places. You must be aware of how time is passing and act accordingly. Often the reason a person is late, or does not finish a project by the deadline, is because they told themselves “just one more thing…” or they “lost track of time.” Choosing to be punctual means you recognize when you are wasting time and have the self-control to stop and do what needs to be done.