Ask for more direction if necessary. Get organized and have a daily to do' list. Return all calls promptly. Show up on time to meetings and other assignments. Be aware that although you are putting in extra time building a career, you also need a balanced life.
People put considerable time, resources, money and effort into getting a college degree.
Even more effort should be put into job selection and work habits. So, by examining what can and does go wrong in an employment setting and by being persistence, smart and hard working with a positive attitude, good communication skills and getting along with others your chances of being successful in that first job are greatly increased.