Just sharing some interesting reads I came across this one is by James Clear an author about about behavioral psychology, and I am giving you the brief version. You can read the whole article here.
The Science of Positive Thinking: How Positive Thoughts Build Your Skills, Boost Your Health, and Improve Your Work
Positive thinking sounds useful on the surface. (Most of us would prefer to be positive rather than negative.) But "positive thinking" is also a soft and fluffy term that is easy to dismiss. In the real world, it rarely carries the same weight as words like "work ethic" or "persistence."
But those views may be changing.
Research is beginning to reveal that positive thinking is about much more than just being happy or displaying an upbeat attitude. Positive thoughts can actually create real value in your life and help you build skills that last much longer than a smile.
What Negative Thoughts Do to Your Brain
Researchers have long known that negative emotions program your brain to do a specific action.
For example, when you're in a fight with someone, your anger and emotion might consume you to the point where you can't think about anything else. Or, when you are stressed out about everything you have to get done today, you may find it hard to actual start anything because you're paralyzed by how long your to-do list has become. Or, if you feel bad about not exercising or not eating healthy, all you think about is how little willpower you have, how you're lazy, and how you don't have any motivation.Your brain closes off from the outside world and focuses on the negative emotions of fear, anger, and stress. Negative emotions prevent your brain from seeing the other options and choices that surround you.
What Positive Thoughts Do to Your Brain
When you are experiencing positive emotions like joy, contentment, and love, you will see more possibilities in your life. These findings were among the first that suggested positive emotions broaden your sense of possibility and open your mind up to more options.
A child who runs around outside, swinging on branches and playing with friends, develops the ability to move athletically (physical skills), the ability to play with others and communicate with a team (social skills), and the ability to explore and examine the world around them (creative skills). In this way, the positive emotions of play and joy prompt the child to build skills that are useful and valuable in everyday life.
These skills last much longer than the emotions that initiated them. Years later, that foundation of athletic movement might develop into a scholarship as a college athlete or the communication skills may blossom into a job offer as a business manager. The happiness that promoted the exploration and creation of new skills has long since ended, but the skills themselves live on.
The benefits of positive emotions don't stop after a few minutes of good feelings subside. In fact, the biggest benefit that positive emotions provide is an enhanced ability to build skills and develop resources for use later in life.