But I kept going like a psycho

from Childish Gambino – Life: the biggest troll [andrew auernheimer] Lyrics on Rap Genius

Meaning

Psychos are persistent and will keep going until they’ve reached their goal/target due to an insane rationality. The definition of insanity is doing the same thing over and over again expecting a different result.
http://www.youtube.com/watch?v=WDpipB4yehk

BTI Screenplay: Naomi (Jhene Aiko) knew that The Boy was going be an awful drug dealer because of his lack of experience and his awkward personality. Eventually Naomi was right, but he still decided to stay in the business.

Also, the way CG pronounces the word “psycho” sounds like he says cycle, which means a series of events that are regularly repeated in the same order. So this could also be another interpretation of this lyric.

To help improve the meaning of these lyrics, visit “Life: the biggest troll [andrew auernheimer]” by Childish Gambino Lyrics and leave a comment on the lyrics box