Be nice to people

Treat them as you would like to be treated. This is the last item on the list but perhaps the most important of all. Your favorite colleagues will be the ones who are genuine and sincere in their work and their relationships with you. Remember if and when you make the decision to leave an employer that you handle it with courtesy and professionalism. Deciding to not show up one day or not give proper notice is extremely rude. Not only does this reputation stick with the intern program, but it will follow you for the rest of your career. You shouldnt be nice because it is important for future references, you should be nice because caring about the organization and the people who have invested their time and resources to help develop you as a person and a professional is the right thing to do.