What do you think was the biggest mistake you've made as a parent?

ng mabitwan ko sya at nhulog .. sobrang sakit tpos nagkaroon po sya ng bukol n lambot na akala ko nagcrack ulo nya buti n lng nung ciniti scan sya ok lng .. at walang khit anong damage .. thanksgod spbrang hindi ko mkklimutan yun at pinagsisihan ko hanggang ngayon 😔