Many employers prefer you have a degree in business for a senior advertising account executive. In some cases, experience is more important. You might want to start out as a lower level executive first and gain as much experience as you can.  Learn time management skills to be able to meet deadlines. Study the industry and know what’s out there. Apply to as many jobs as possible and get your foot in the door even as an assistant. Since good advertising executives need to understand people you might consider taking some psychology courses to get a better understanding of the mind and what drives people to make purchases.