Important Note.

Don’t let your brain go off and wander about the scale of the universe and or time. 
Cyclical or not.
How accurate current quantum mechanics and theories are regarding it.
How reliable human concepts are regarding such immensely over-arching concepts. 

 Especially when you’re about to go to sleep. The alarming realization of your potential lack of existence and/or extremely minuscule representation as a race on the timeline of time itself…