An added safety measure is to get a Caller-ID box to see who's calling before you pick up the phone. This way, if it's a phone number of someone you don't know, you don't have to answer it. If you have an answering machine, do not leave a message that makes it sound like you are the only one living in your home. If possible, leave the original recorded message that came with the machine. Unless you're going to a party, or other affair where there are many other people that you know, plan on wearing flat shoes or sneakers.
Good balance is good to have in any situation.
Make sure not to carry any more cash than you need. If you are driving your own car, be sure to keep the doors locked, and windows up at all times. As an added safety measure, ask a friend to accompany you. When you stop behind another car at a traffic light, make sure to leave enough room so you can safely pass around to the front. If you're stopped at a traffic light in a desolate area and get bumped from behind, do not get out of your car.