How you know if you're acting crazy.
Long story just answer .
If someone has mental problems, they usually give off very negative energy. If you are a good receptor you can feel that immediately when they walk into a room
When they stare with wtf face
Short answer... are people accusing you of actions you have no memory of doing?
Wide mood swings, out of character actions, uncontrollable anger/rage, violent outbursts, suspicious or paranoid thoughts, hearing voices
Most truly crazy people have no idea that there is anything wrong with them