It is quite telling and interesting to think that solitary confinement, which is to say - alone within your own head, is considered a form of punishment EVEN inside of a prison. Culturally, the prospect of being of being locked alone in a room, with their own minds, is a devastating one. Why is that?
I can almost guarantee that in any given day, you're experiencing everything from mundane to ridiculous; which begs the question...
It matters not when you began but if you finished on time. And as soon as you understand this principle, you begin to work backwards.
It may very well be true that happiness is not our natural state. With so many ideas, thoughts, circumstances and notions that have the ability to throw us off the course of happiness, perhaps our natural state is something else.