Lesson of the day: the ability to "turn the other cheek" has to come from God, and not from yourself.
He will plant it in you when you are ready.
It comes from a place of forgiveness and unconditional, Godly love, for the person who is treating us wrongly.
If you have to ask "how can I turn the other cheek if this person keeps hurting me?" then you are not ready to do it.
Keep seeking the Lord and asking Him for guidance.
He will eventually give you the ability to forgive and "turn the other cheek".