Nobody is bad all the time – we’re sometimes good and sometimes bad. When you have a good heart and mind, then you’re a good person. When you have defilement, you’re a bad person. It’s the same with everybody.
Nobody can be good or bad all the time. If the mind is good, we say it’s a good person, and the converse is true.
Everyone has a mixture of good and bad qualities of mind. Don’t judge yourself too rigidly.
Sometimes we’re smart and other times, stupid. When we’re deluded, we become stupid. It’s the mind quality, not the person that determines that.