Locking in is a deeply Girardian activity: it's about ignoring appetites that, once appeased, reveal their emptiness. Locking in is implicitly realizing that all desire is a desire for being and that if you aim at your highest value, that if you place no other gods above it and not covet your neighbor's possessions, you're able to free yourself from distractions that split your soul and refocus your entire being on transforming into who you want to be. It's about spiritual sobriety and how concentration, the narrow path, is the way to transcendence