We don't just project our subconscious feelings onto other people; sometimes we even project onto inanimate objects. If you find yourself getting irritated by things like: elevators, the street lights, your pants, ad infinitum, perhaps that's a good indicator it's time for self-reflection. Perhaps you're angry or upset with something much deeper than the object or person.
I'm inclined to think the good things people say about me are more valid than the bad, but perhaps it's not so harmful to reflect.
Journeying the path to enlightenment, you will encounter many brick walls.
If you don't believe it yourself, how do you expect others to believe you?