Positive psychology is a field of psychology that began in the late 1990s and is described by its emphasis on positive emotions such as pleasure, tranquility, confidence, pride, motivation, wonder, appreciation, interest, pleasure and love. Positivity by Barbara L. Fredrickson is a self-help book built on extensive research in positive psychology. This book has been very influential and allows for self-assessment. It contains various concepts that deeply refer to positivity versus negativity. The first concept developed by Dr. Fredrickson is titled “Broaden and Build Theory,” which is an essential and common theory in psychology. This theory describes how increasing positive emotions creates an upward spiral that leads to future positive emotions and creative thinking. Such thinking strengthens your psychological strengths, allowing you to be a much more tolerant and motivated person. This theory contributes to a more social personality and better physical and mental health. The logistics of the how and why of this theory captivate me. Those who spend time working on increasing positive emotions and seeking pleasure for a better attitude will see mind-changing experiences based on this theory. A second concept mentioned is the idea of ​​a “positive ratio.” This refers to the ratio of positive to negative emotions needed to achieve the “Expand and Build effect.” In order to develop properly, it is beneficial for people to have 3 or more positive emotional experiences for each negative emotion. One can actually use this calculation to do some psychological detective work in your own daily experience. Self-monitoring is described as an effective psychological mediation. It takes time and effort, but the information taken from the middle of a sheet of paper...brought to mind an ancient but modern use of the word: positivity. Fredrickson first makes a good case for telling us exactly what positivity is not. Firstly, it is not about happiness, a word that she finds “overused”. His conclusions are not based on mere guesswork or personal revelations but rather on science. Specifically, on “positive psychology,” as it is also called, a growing field that lends experimental credibility to a topic that philosophers have considered for centuries. Some of Fredrickson's conclusions are true, but they hardly seem unique or new. For example, she writes, "Whether you experience positivity or not depends essentially on how you think." , basically the same concept half a century ago in his 1952 classic, "The Power of Positive Thinking," Peale's understanding was based on his faith, not science, but that doesn't diminish his words to relevance..