I am a mum to 2 ds & got guardianship of another ds they are 7 2 & 9 months need advice who how to discipline them as my 2 year old is now copying the 7 year ( which is the guardianship) & I don't want to smack them but dh said he does as we were smacked as a child & it didn't do us any harm, but I feel terrible if I smack them please can anyone help me