My friend try to use idioms/parse to express that "If there is something has to be done, then let's do it right now, not postpone to other day."
She was trying to use "One of these days is none of these days", labelled on her product package, trying to be cool :)
But I felt that sounds weird... The parse itself doesn't make sense alone by itself... Its make sense during conversion like here: http://idioms.thefreedictionary.com/One+of+these+days+is+none+of+these+days
So is there any other idioms that can be use alone, a parse on the product/poster/shirt itself that sounds cool?