Can people disappoint you to the point of never reverting to your old personality?

Unfortunately I've changed by now. Nowadays I'm all for equal leadership in a relationship and ''go with the flow'' stance, screw this conservative, old-fashioned BS thing. Meanwhile I came to the US at age 3, I still had part of my culture. I took pride in presenting others to my family, even sometimes presented meals. I've been used by others, an ex boyfriend suddenly expected food all the time and taking advantage of everything. Someone even stole my money and I never found out who did it. I was giving, giving and others were taking and taking from me.

That old me is gone by now. Nowadays I don't even bother introducing a guy to my family (for what so he can then leave, take advantage again, etc), don't make any elaborated meal for anyone (you got two feet, make it yourself) I'm more straight forward, less expressive, etc.

My family doesn't want to welcome anyone new at this point. Can getting used, taken advantage of and encountering rotten people make you change so much to the point you literally abandon your culture?

Can people disappoint you to the point of never reverting to your old personality?
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