This week we're joined by Alexander Darwin!  Alexander is a black belt at Boston Brazilian Jiu-Jitsu and is best known as the author of the BJJ-inspired sci-fi/fantasy novel, The Combat Codes.  In this episode, Alexander talks about the ethos of keeping it playful: a statement we've all heard before, but also a philosophy that significantly increases your enjoyment of — and performance in — Jiu-Jitsu over the long term.Follow Alexander and The Combat Codes on social:https://www.instagram.com/combatcodes/https://www.facebook.com/CombatCodes/https://twitter.com/combatcodesRead The Combat Codes on Amazon:https://www.amazon.com/Combat-Codes/dp/0316493007 Listen to The Combat Codes on Audible:https://www.audible.com/pd/The-Combat-Codes-Audiobook/B0BJ56BWCQMental models discussed in this episode:Consistencyhttps://bjjmentalmodels.com/consistency/Keep it Playfulhttps://bjjmentalmodels.com/keep-it-playful/Self-Competitionhttps://bjjmentalmodels.com/self-competition/Feedback Loophttps://bjjmentalmodels.com/feedback-loop/Emotional Contagionhttps://bjjmentalmodels.com/emotional-contagion/Don't forget to check out BJJ Mental Models Premium!If you love the podcast, you'll definitely love our premium membership offerings. The podcast is truly just the tip of the iceberg – the next steps on your journey are joining our community, downloading our strategy courseware, and working with us to optimize your game.  We do all this through memberships that come in at a fraction of the cost of a single private.Sign up here for a free trial:https://bjjmentalmodels.com/Need more BJJ Mental Models?Get tips, tricks, and breakthrough insights from our newsletter:https://bjjmentalmodels.com/newsletter/Get nitty-gritty details on our mental models from the full database:https://bjjmentalmodels.com/database/Follow us on social:https://facebook.com/bjjmentalmodels/https://instagram.com/bjjmentalmodels/Music by Enterprize:https://enterprize.bandcamp.com/