You want to make sure you are doing everything you can to keep yourself safe. Use light sources to make sure can be seen as well as see obstacles and hazards. You also want to generally avoid listening to MP3 players and phones. Reducing your ability to hear can cause problems in the daytime, but using them at night only increases the danger.
Finally, consider planning your route around well-lit areas. Areas that have a lot of street lamps or other night lightings will make it easier to see farther ahead of you and plan and react accordingly.