As September approaches, many (not all) of our kids will be feeling nervous about returning to school. New teachers, new friendships, new routines—these changes often bring a mixture of anticipation and unease. For us, it can be hard to watch our kids wrestle with worry, but it is helpful to remember that a little anxiety is not only normal, it can actually be beneficial. Essentially anxiety is the body’s way of saying: “Pay attention—something important is happening.” That slight knot in their tummies is not a malfunction; it is their nervous system preparing to adapt to change. Lisa Damour, clinical psychologist, often compares stress to exercise. Muscles grow when they are challenged, but only if the strain is manageable and followed by recovery. Emotional life works the same way. A new class, unfamiliar routines or meeting new classmates may feel uncomfortable, but these experiences help our kids to strengthen resilience and discover that they can cope with challe...