A_ The first thing is to be optimistic person, which means that you have to focus on the brilliant side on your personality in everything Without exaggerating. and the most important thing is to not let the negative ideas control you.
B_ The second thing is setting your goals. Those who seek to achieve their aspirations and goals are happier compared to those who do not have goals. the existence of these goals leads to the promotion of self-confidence, in addition to that the nature of the goal is not as important as the importance of continuous work towards achieving it, so the individual must Organizing his daily activities to suit his goals.