Mind Reading - When you make assumptions about what somebody is thinking or feeling without them telling you. In reality, you are delusional or paranoid.
Catastrophize - when you over think a problem and the effects that they will actually have on you. For example, when you think that losing a relationship means the end of your life when really you can find someone new the next day or down the line.
Filtering - when you only pay attention to one side of things. For example, you only remember the bad times you had in school and not the good ones.
Polarized thinking - when you think of things as either black or white or good or bad. For example, there can only be good or bad people or success or fails.
Personalization - when you take everything too personally. For example, when you think that everything people do or say is some kind of reaction to you.
Blaming - when you hold other people accountable for your problems. For example, you blame someone else for causing you to make a bad decision. In actuality, you were the one who made the wrong call based on your own judgement.