After Will had been in his new job for a year, he believed he was completely in control of everything he had to do, and was praised by his bosses. When he started taking things for granted, and focusing only on "the big picture," as he put it, because the small details were not really worth his time, he got into problems with his manager. He sent her an angry email, telling her exactly what he thought of her. As a result he was fired. Which two pieces of advice should Will have heeded?