When a freight train attitude is coming at you, get out of the way!
Often, we see someone coming at us with a horrible attitude. We think we can “fix them” by being positive. The reality is those type of folks are far better about getting you into their sour attitude than you will ever be about getting them into a better attitude.
Don’t try to change their attitude, instead realize it’s not about you, it’s about them. Step to the side and let the freight train go past.