Living with someone who is always putting you down, criticising you, controlling you and being abusive or violent towards you may have sapped your self-confidence and your belief in yourself.
Efallai y bydd byw gyda rhywun sy’n eich bychanu chi, eich beirniadu chi, eich rheoli chi, eich cam-drin chi neu ymddwyn yn dreisgar tuag atoch chi wedi tanseilio’ch hunanhyder yn llwyr.