I did it! On the treadmill admittedly, which is definitely easier than the real world... but still I did it! I had a big grin on my face when the cool down walk started. I ran 5 whole minutes - twice! I know it isn't all that long in the scheme of things but a mere month ago I doubted my ability to keep running for 1 minute.
I found tonight's run really comfortable, body seemed to be working smoothly, breathing stayed under control and I was even able to concentrate on my posture and make sure I ran tall.