When a body-language habit doesn't resolve just from fixing the underlying belief (see Body Language Follows Belief (Indirect Coaching)), the fix is to replace the gesture rather than try to eliminate it. Reasoning: a habitual gesture serves a purpose or fills an emotional/communicative role — removing it without substituting something else leaves a vacuum or an unfulfilled role, and the brain struggles to execute "stop doing X" instructions anyway (it processes negatives poorly).
Concrete example: for restless hands, the replacement is to put your thumbs in the back pockets of your jeans and stand that way while talking — it keeps hands calm and forces upright, confident posture, instead of consciously suppressing fidgeting.
Generalization: framed explicitly as a general habit-change heuristic ("similar to getting rid of a lot of habits"), not specific to body language or seduction coaching.