This is a very complex question, since deception affects many aspects of everyday lives. This occurs because, as people, we base our choices, likes, wants, and needs on the things that we recognize as "facts". For example, I am going to vote for a specific Presidential candidate, based on the information that I have researched about him, which is supposed to be true information.
However, let's suppose that, months later, this presidential candidate comes out and says that everything he told his voters were lies. Imagine the feelings that such information will produce: anger, resentment, sadness, incredulity, and the overall feeling of being taken for fools. All these emotions, and their consequences, would be a result of the deception caused by one person. Therefore, deception does play a huge role in essential behavioral connections
a) it prevents us from trusting
b) it disables our ability to communicate freely
c) it makes us double guess the information that comes to us as "fact"
d) it takes away all the positive aspects of dyadic, relational, and dialogical communication because at least one of the parties involved may, or may not, be speaking the truth.
Another way in which deception can relate to our everyday lives is in the way that it can tore families apart. When someone in the family is hiding a secret, or has valuable information that can help everyone come to a consensus, whether a good one or a bad one, the validity of the family unit comes down to nothing. Trust is one of the most solid rocks of the family unit because the family, as a unique group, has to learn how to co-exist under all kinds of circumstances.
When a member of the family uses concealment (hides information), or understates facts (downplays a really important issue), the family cannot come together to tackle any real problem that lurks beneath. As a result, the trauma, stress, and anxiety continues to build up in every one of the family members, making the situation look like "the elephant in the living room": everyone knows something is terribly wrong, but nobody dares to address it. This applies to everyday family problems, such as addiction, illness, affairs, gambling problems, financial instability, or unfulfilled expectations.
A final way in which deception relates to our everyday lives is in the economy. In 2009, with the US economy plunging as it is, Bernard Madoff is arrested after confessing how he had used his business to conduct a Ponzi scheme. The problem with his is not just that he lied, but that his business impoverished investors by billions of dollars that he used for his own benefit. This deception left a dent in the American psyche, and made many question who exactly is behind our normal financial operations. Americans lost a lot of trust in the system, and in each other. That loss of trust, in general, is the worst effect of deception in the everyday lives of people.