I'mma always be a positive person even when somebody being negative I'm going to still stay positive

I'mma always be a positive person even when somebody being negative I'm going to still stay positive

We all kick it with our friends family neighbors acquaintances you just actually made on the streets and sometimes you're having a good conversation you're laughing you're actually being joyful and then you have that person who walks up who's just a straight-up Bob killer they stop the laughter they stopped the joy love peace and tranquility I know that I have ran across people like that but have you and explain to me what happened