I am always getting asked the question "How can I get faster". It's usually asked from the context of a runner looking to improve their 5k times. When asked, my first response is to geek out with training theory and other scientific sounding stuff about mitochondrial development, lactate threshold, blah, blah, blah. But runners are usually looking for a just a few quick tips that they can remember with having to read a book!
So, sparing you the scientific mumbo-jumbo, here a few simple adjustments to your weekly routine that can make you a faster runner.
Try to incorporate one of these concepts into your training each week. First get used to slowing down, then get used to running more, then everyday, etc......... Be patient, don't overhaul your training all at once. Do this and in 2-3 months you will see significant long lasting improvements in your running.