i smoked before everything at a point..
..getting sober helps you balance your mind because you seem to be able to focus on more than just a couple things at once

again thats just a rough estimate as to how it could help you with your left right problem you explain...

im sure there are a bunch of people who multitask hardcore, perfectly while really high..its just when i smoked i found myself emotionally and attentionally
focusing on a song thats playing, a game im playing, or one or two simple things i might be engaging in...

being sober opens your mind in a different way