I'm already getting little 'twinges' of it, even now in high summer. There's just a tiny, tiny difference in the quality of the light and I can feel myself shifting ever-so-slightly into the high-energy mode of early Fall, which (besides summer) is my favorite time of year. I love the months from July through October---they're my best time.

My pdoc says I'm a very "light-sensitive" bipolar, meaning it doesn't take huge changes in the amount OR quality of light to cause a mood switch. You're probably the same way. Yes, we should compare notes in September to see where we're at on the mood spectrum.......who knows what we can learn from being mindful of our moods during a season change?