want some advices on queen pawn opening

there was a guy in a club I am a part of who loves to study chess - specifically, he loves to memorize openings.  We came up with a new defense which made him simple to beat:  it was the "F%#k with B" defense - and all you had to do was avoid the memorized main lines and play quality principled chess.  that being said, there are only a few principles I play by:
1) control the center.  The player who controls the center of the board sets the tempo for the game.

2) pawns and knights always gravitate towards the center, unless it is unavoidable. There are simply more options, more places to go, more influence over the board.

3) keep the kings aligned. Should it come down to king and pawn endgames, the ability to match mobility is important.

4) defense defense defense.  Even when playing White.  Become the rocks your opponent smashes themselves against in futility.  Even if your opponent has multiple plans of attack, all you have to do is survive long enough to break the attacks, and then you become dangerous.

5) the more choices you give your opponent, the greater the opportunity there is for your opponent to make a mistake.  So don't overcommit to an idea/attack, etc.  The more flexible you are, the harder it is for your opponent to nail you down, thus expanding their choices to the point of overload and bad mental processing.

6) To every rule, there are exceptions.  They key to winning is Kenny Rogers: "Know when to hold 'em, know when to fold 'em.  Know when to walk away, know when to run."  You have to know what the rhythm of the game feels like, when the momentum shifts (and how) and when an opponent is lost inside their own head and doesn't know what to do.  In short, when they are gambling, and what you are willing to gamble in return.

7) It is only a game - win or lose, it is an opportunity to learn something - about yourself, about your opponent, about the game.  The goal is to learn something, winning is the icing on the cake.  I would wager that more games have been lost because players fear losing than any other reason.  If winning no longer matters, then the fear of losing cannot exist.  Without that fear, your mind is more clear to think and see the board for all the options available to you.

Study openings and main lines and all the nitty gritty stuff - but if you do not play clean, principled chess, your opponents will have an easy time with you.  I have had folks with honest non-blitz ratings of 2000 and better tell me they hate playing me because of these principles, and I make them work for every single second of a game.  To play against this philosophy is emotionally exhausting.