How do you build after losing perspective?

I used to be a kind, sweet person from what people had told me, I never used to get angry or lash out on anyone. Lately I have been getting triggered and irritated at slightest of things and I don't why thats happening. I take everything seriously, point out every wrong thing people say to me even if it's a joke or they mean in some other way, and I get angry or upset about it. I get easily influenced by what people say, what people are saying online , what others think and in the end I end up losing my own perspective and capability of thinking what is right after listening to multiple perspectives. I just can't gauge what is actually right and what is not. I end up triggered on wrong things and give a pass to the wrongs. Please help me on some advice on how can overcome this? I feel really lost on having my own perspective. Even if I think about about building it, when I think about the goals I had, the compassions lost and want to have new ones. I come up with nothing.