So as promised, I've included some photos of my 12 mile commute to work and back.
Insight of the day: The secret to keeping up your momentum is to be able to rest while on the go. Obviously, you are going to want to keep spinning, and all the fundamentals come into play, but in addition to all that, if your heart is pounding away in your chest, you might find that you can actually slow your heart rate by slowing down your breathing, and giving your body a rest while still moving forwards on your bike.
I've found that after fully exerting myself, if I focus on my breathing and heart rate, and hold my breath after breathing in or out for four heartbeats, I can slow my heart rate down. After I'm done I feel rejuvenated and ready to exert myself fully once again-- as though I've stopped on the side of the road and taken a 10 minute rest. Even while in the middle of climbing a hill!
There's a metaphor about day-to-day life that's dying to be made here, but I'm not going to make it.