Start From Zero was founded by a Hong Kong local street artist - Dom.
START stands for STreet ART, STencil ART and STicker ART.
He started performing street art from nothing, i.e. "zero: I hope that when someone sees my sticker, they will be like me, start doing street art from "zero".
It can be a slogan for encouraging people when they are unhappy, down or miserable.
He also wants people to remind their friends of this slogan when the same things happen and in this way we can all pay it forward.
Start from Zero