How many times are you able to forgive someone for insensitive remarks?

I used to quickly put a cross on someone who was rude or told me a hurtful remark. It caused so pain in myself.
I neither stopped to think about their real intestinos.
For example, I have in my mind an ugly remark my dad pronounced for no reason. He tends to overreact. He's also an avoidant. He said: you don't deserve even the air you breaths.
It's hard to hear this from your own father.
You can guess what my reaction was. I left the house.

Now, I think I can understand better people's behaviour and intentions so I don't feel so vulnerable to external influencies.
I guess that I won experience with age (I'm 42) along with therapy that boosted my self-steem.

How about you? What point of your path are you in?