Don't increase your mileage too quickly.
If you want to fully enjoy your runs, always be in your best shape.
What I really like about running is that it teaches you to be patient, whether you like it or not. You can be patient and listen to your body grow stronger before increasing your running distance. Or you can learn the hard way and push yourself beyond your limit and get injured, then patiently wait for your body to recover before you can get back on the road.
