Even if you know an area very well and are sure of the right route, you should never neglect your own safety.
Always tell friends or family where you are going and when you will be back. Make sure you take with you some means of communication and navigation. For navigation, don’t rely exclusively on electronic devices, as they may not function in extreme conditions. Take a map and write down the phone number of the emergency services.
Having a first-aid kit with you, and knowing how to give first aid, might save lives, including your own.