As he settled into his new office, he felt rather self-conscious about not looking busy. I know it's a large one. You can count on me. You're welcome, sir. He put down the phone and nodded to his boss who was standing in the doorway, sure that he had impressed him tremendously.
Ambitious people have a tendency to become focused to a fault.
Trying too hard to be impressive at work can backfire on you. Ambitious people want to be recognized and admired. Furthermore, others will find you annoying. People invariably want to avoid those with heavy baggage. Picking your battles is impressive, and fighting them fairly is essential.