Honestly I’ve been playing “defend everything” for a couple days now and it’s boring as hell. One of the things I enjoyed most about chess pre-this-post was just doing crazy creative experimental damn the torpedoes attacks and gambits (my own gambits not studied ones) that would catch my opponents off guard! I have moments of, if not brilliance, at least damn higher than 700 skill rating! But I realize now I do need to pay attention to my fundamentals and stop hanging pieces, missing free piece grabs of opponents hanging piece, not casting until it’s too late, etc.
Thanks again for all the advice, folks!
...You don't have to defend every piece at every moment, but attempting to do so is useful, and ...