[RVijay007]

First article I've seen approaching emotional state in this manner, so kudos to that. Back at MIT, I also came to this realization and my friends and I used to say "it's all about the ddt" whenever life got us down (or even up, as a cautionary tale to not get too excited and watch out). We were of course referring to d/dt of life, and how that had more influence on our states than the absolute position of our lives. Nothing proven, but an observation that held up very well in all our lives. We still have this saying amongst ourselves - glad to see others thinking along this path now.