I've calculated that I get lost at least 8 times a week, and if you're in a similar position then I can recommend doing what I did by installing Trippo on your mobile phone.
The program allows you to view maps compatible with OziExplorer, with all the functions needed to interpret GPS signals and view your position on screen.
The best thing about Trippo is that it allows you to check out exactly where you are using your own maps, rather than having to rely on those bundled with a GPS program.
The app displays your position precisely, telling you your latitude, longitude and even your present altitude. It can also be used to calculate your course and list the GPS satellite coverage.
Whether you're travelling on your bike, on foot or even on a skateboard, Trippo provides a great way of viewing your position on your own map.