Ways Your Mind Tricks You In Everyday Situations

The Spotlight Effect: The perception that everyone is looking at you
Ever walked in awkwardly in public, and thought, "Oh, everybody noticed that I walked awkwardly in public, didn't they?" Spotlight effect is the phenomenon of overestimating how much other people notice our appearance, mistakes and our behavior. In fact, most people hardly pay attention to anything more than what they are doing.
The Frequency Illusion: Seeing something everywhere after learning about it
Ever discover a new word and then be able to see it all the time? These are called the frequency illusion. When your brain catches on, it's more prone to noticing it the next time you see it, making it appear more common than it actually is.
Reduce the Doorway Effect: Forgetting why you came into a room
It is a common experience to walk into another room and forget what you entered the room for. Don't forget to walk into another room and forget what you had in mind to find. Changing from one environment to another has been shown to sometimes affect the mental set that a person has for a task, making it more difficult to recall what one was supposed to do.
The Pratfall Effect: How a fumbled shot can make you seem more likeable!
This is known as the pratfall effect. If a person is already seen as competent, a small mistake can actually make him look more human than impressive.
Why incomplete tasks remain in your mind, according to the Zeigarnik Effect
You may find yourself thinking about an unfinished assignment, a conversation that you had that you still haven't resolved, or a task that you keep putting off. The Zeigarnik effect refers to the tendency for incomplete actions to stay ‘mentally available’; however, this effect can be mediated by situations.
Making judgments based on a single favorable impression
When we see someone as charming and/or attractive and/or confident, we may assume they're also intelligent and/or trustworthy and/or capable. This cognitive bias is known as halo effect. It serves as a reminder that good looks doesn't necessarily give you much information about the other attributes.
Emotional Contagion: Catch a Mood - How Many Moods!
Emotional contagion is the ability of emotions to be transferred from one person to another via facial expression, voice and social behaviours.
The Baader-Meinhof effect: What do coincidences have to say?
Fears of these moments can be unsettling, but selective attention and memory may account for why we see these coincidences and why we don't recall many other moments when they aren't.