No, the law is "For every force there is a force with equal magnitude in the opposite direction"

And no, this does not occur to me at all. The next day just FEELS shittier because you're so used to the nice feeling and if there isn't as much or more good things happening you feel upset. And the same also goes for shit -> good days. As long as you keep an optimistic view about everything, it really keeps you from needing to post crap on an internet forum rather than out there having fun.