Seeing yourself in others

Sometimes when I observe other people, I see a little bit of myself in their actions or words. It scares me because it's mostly bad stuff that I notice, and it makes me wonder if I only notice the bad stuff or if I only have bad qualities. I'd like to think that I am generally a good person so I don't want to accept that I do bad things or have a bad attitude towards everything. Or maybe most people have the same attitudes about certain things and that's why I notice a similarity when I see other people acting a certain way, and it's not because I'm a bad influence or anything, it's just nature. I think if I keep telling myself that, I'll feel better.