I think just living smart and being aware of your surooundings is key. Check that all windows and doors are completely shut and locked before leaving the house. I have always- ALWAYS -carried my keys in my hands, with a key extended outward. If someone would approach you in a threatening manner, the key is a great weapon to scratch, stab, etc. I was told to aim for the eyes when I took a class waaaayyyyy back in college. I still carry my keys like that when I have keys in my hand. Always have a cell phone too. You can get one of those trak phone where you by the phone and then minutes off a card = no cost monthly unless you do use it.

I am always aware of my surroundings when walking around, especially as it gets dark. I listens, I watch. I stay in the moment and don't let my mind wander to other things, like what do I need ot pick up at the grocery store, or when can I get that one projct done... I stay focused on when I am, and whats going on around me.