In this TEDx speech on the power of positivity, Samantha Rea breaks down how you can incorporate positive thinking into your daily life.
She begins be acknowledging that there are problems in the world, that it would be impossible to ignore them, and that it is unreasonable to think that simple positivity can solve every problem. Her argument, however, is that positive thinking can be an essential stepping stone to real world action, and lays the groundwork for people to begin to tackle problems.
By keeping a belief that things can and will get better when things seem hopeless, you immediately help yourself to start changing things. When you look for positive things, and choose to have a good day (as described in the video), you begin to focus on the good things in life and not the negatives- which leads to an increased quality of life.