The pursuit of happiness has been a matter of concern to people around the world for centuries.

At a high percentage, our happiness depends on our DNA, following the preoccupation with things we love and at a lesser percentage our happiness depends on the relationships with the people we love, how good our health is and how much knowledge and experiences we acquire during our lifetime.

The definition of happiness has passed into our brain from a very early age and later in combination with social and economic beliefs, we seek it in situations that are acceptable to society, such as marriage, children, family, successful professional life and the ability to acquire goods that make our lives easier and therefore makes us happy.

For example, one of the beliefs that happiness is achieved with the creation of family and children, is confuted through surveys  that showed children do not necessarily bring happiness to a couple, on the contrary they diminish it.

Happiness is a neurochemical reaction, with coded information that contributes to our survival. Minimal serotonin secretion can create a sense of happiness.

Nature itself urges us to continue doing what we do, in the same way that grief prevents us, makes us hesitant and puts us in a defensive position. In both cases the voice of nature is happiness and it is up to us to manage in the best possible way to conquer it.

The plasticity of our brain strengthens the effectiveness of serotonin and can change the basis of our thoughts, thus by changing our brain with our thoughts.

Serotonin is enhanced with positive thoughts while the cortisol is strengthened with negative thoughts.

It is very important to be thankful for what we have and to enjoy, rather than being consumed with jealousy and desire for what we do not have or what others have.

Positive thoughts create a sense of security and competence as opposed to the negative ones that create a sense of fear, insecurity and images of a negative future.

There are behaviors that strengthen the secretion of serotonin in our brain, such as the benevolent contribution, to spend quality time with the people we love, the evolution of knowledge that works catalytically in our brain function, acquiring new experiences to better understand the world and overcome our fears.

The more positive, optimistic and grateful we see the world around us the closer we get to the meaning of happiness. And when we do, we can give an answer to the eternal question of why we exist.