Anxiety is both a mental and physical state of negative expectation. Mentally it is characterized by increased arousal and apprehension tortured into distressing worry, and physically by unpleasant activation of multiple body systems—all to facilitate response to an unknown danger, whether real or imagined.| Psychology Today
Though our need to connect is innate, many of us frequently feel alone. Loneliness is the state of distress or discomfort that results when one perceives a gap between one’s desires for social connection and actual experiences of it. Even some people who are surrounded by others throughout the day—or are in a long-lasting marriage—still experience a deep and pervasive loneliness. Research suggests that loneliness poses serious threats to well-being as well as long-term physical health.| Psychology Today
Adolescence is the transitional stage from childhood to adulthood that occurs between ages 13 and 19. The physical and psychological changes that take place in adolescence often start earlier, during the preteen or "tween" years: between ages 9 and 12.| Psychology Today
Memory is the faculty by which the brain encodes, stores, and retrieves information. It is a record of experience that guides future action.| Psychology Today
The ability to pay attention to important things—and ignore the rest—has been a crucial survival skill throughout human history. Attention can help us focus our awareness on a particular aspect of our environment, important decisions, or the thoughts in our head. Maintaining focus is a perennial challenge for individuals of all ages, and people have long sought out strategies, tricks, and medications to help them stay on track.| Psychology Today