You need to invest in a good pair of shoes! I've been putting off buying a pair since I need new tires on my car. I can't justify spending $100 on a pair of shoes when I know I need $800 for tires. Yes $800!
But aren't running shoes just as important as tires? Technically speaking tires are the shoe of a vehicle. Gets you from point A to point B; and good tires means safety. So why am I putting off my running shoes? Shoes get you from the start line to finish line; and good shoes mean no injury.