Tirukkural 121

Restraint lifts one high; lack of restraint throws one anywhere.

அடக்கம் அமரருள் உய்க்கும் அடங்காமை ஆரிடத்து உய்த்து விடும்.

atakkam amararul uykkum atangamai aridattu uyttu vidum.

Restraint lifts one high; lack of restraint throws one anywhere.

Self-control as mental hygiene — same family as yama and as emotion regulation, not as humiliation of a panic attack.