If the phone rings: pick it up. You'll spend less time answering calls than you do avoiding them. If you screen your calls in front of anyone; everyone will know that's what you are doing when you don't answer their calls. Then you get pegged as a jerk, every time you don't answer a call no matter what the reason is. It affects people perception of you, and eventually it affects you.
Do you best at everything. It's what football players (if you know me at all, you know how much I love football) call leaving everything out on the field. Namely their best effort. Vince Lombardi, told his team that they would relentlessly pursue perfection, knowing full well that they would not catch it, but in the pursuit of perfection, they would catch excellence. In short, every person needs to know the satisfaction of walking away from something knowing that they had given it their best effort.
Learn how to use a broom. No one thing can do more for you in the work place than this. This is the one thing that can make you stand out in a crowd. Taking the initiative to pick up or sweep up what everyone else walks by. It takes almost no time, but it speaks volumes about you. You become the kind of person who sets the standard, and not the kind that has to be given a standard to follow.
Now, go do your best!