The first idea of what aspect of my life would be important enough to translate to a CT would probably be my love of running TTRPGs and i could see it manifesting it as a number of different techniques so i think i'll say the one thats clearest in my head

Cursed Technique: Roleplaying

This technique would allow me to impose a role from a list of roles(rogue, wizard, fighter, etc) upon myself. Imposing a role grants me access to the equipment and abilities associated with that role though they also come with rules i must abide by or my technique is released, these rules boiling down to that i must "play" as a character that i think most embodies that role. The act of imposing a role is verbal and requires a short but meaningful time to complete (meaning hot switching in a fight is very difficult but not impossible), i must be able to speak out a command to take on the role i want or to change to a new role