That which we water, grows
Research has shown us that people who know their strengths and use them frequently tend to feel happier, have better self image, and are more likely to reach their goals. However, many people have a hard time identifying their strengths. They see them as nothing special, even when they are unique.
Strengths are natural capabilities and skills that each person has. When a person uses their strengths, they tend to feel energized, and report higher levels of self image, well-being, and relaxation. Studies have indicated that focusing one's own strengths can decrease depression, and help people complete tasks and goals.
Our brains can be trained to prefer positive self talk through practice. Research suggests that we can change neuronal pathways. "Conscious training of your 'executive control' makes it possible to reshape the architecture of your brain and rewire the neural pathways of your mind." One simple way to do this is by practicing when you are not in an emotionally charged state, by reflecting on positive traits present in one's self. This is also part of mindfulness practice, that many clinicians and clients alike seek out for mood regulation and relaxation.
https://www.psychologytoday.com/us/blog/the-athletes-way/201601/your-brain-can-be-trained-self-regulate-negative-thinking
https://www.sciencedirect.com/science/article/pii/S1053811915009866?via%3Dihub