Summarize "Out Smart Your Smartphone" to describe the author's main point and reasons behind her claim.

In "Out Smart Your Smartphone," author Elizabeth Dunn argues that it is important for individuals to be intentional in their use of smartphones in order to prevent negative impacts on mental health and overall well-being. She suggests that constantly checking and engaging with smartphones can lead to feelings of distraction, reduced focus, and increased stress. By setting boundaries and consciously choosing when and how to use their devices, individuals can enhance their productivity and improve their overall quality of life. Dunn emphasizes the importance of being mindful and in control of technology rather than letting it control us.