How do I run?

I had another physio treatment today, nothing unusual. My groin I'd coming along really well but I also had my video run analysis with Dr. Definney. It was very interesting seeing myself run and having someone who knows how to run commenting on what I'm doing right or wrong and how to make corrections to help become more efficient. I also wanted to know if I was doing anything that may have caused my re-occurring groin injury. Apparently I was. Its related to my right foot and the fact that my right big toe is pretty much inflexible and that causes me to compensate in my stride with my left leg which puts stress on my left groin. He showed me how to change my stride to relieve that and some other things to change to hopefully make me a better runner. But then it may be hard to teach this old dog new tricks.