You can spend minutes, hours, days, weeks, or even months over-analyzing a situation; trying to put the pieces together, justifying what could've, would've happened... or you can just leave the pieces on the floor and move the fuck on.

This quote means that it is sometimes better to not over analyze a situation and just accept it and move on from it. Instead of spending a lot of time and energy trying to figure out what could have or would have happened, it is often simpler and more productive to just accept the situation and move on. This can help save time, energy and even emotional resources, so it is important to recognize when this is the best course of action.