The tentacles were like phantoms. They're nagging. One time you feel like the happiest person on earth and then all of sudden the burst of happiness subsides, deflates and runs out of life. You run and search for your anchors, things stabilize and then everything's back to normal. Until the tentacles begin crawling back again just when you become unaware.
It's an endless cycle, I'd like to believe. And it's something you overcome in time. Until then, you continue to ward them off and hold on tightly to the anchors you know would carry you safely across that treacherous sea.