The Magic of Believing - Diane Dowsing Robison - Bog

Ridgely (10), her brother, Griffin (8), and their grandparents take a walk along the ever-changing ocean during an adventurous weekend. Surrounded by the miracles of the sea it's a wondrous journey where discoveries unfold. Slowly they realize lessons in front of them reveal simple keys for connecting with an incredible power--a power that resides within each of them every day.
Meanwhile . . .
Twins Kaitlyn and Courtney (13), played in their grandparents' walk-in closet all their lives, where something magical happened. Embarking into the world of high school, they now leave behind their wonderful ""magic closet"" when their grandparents move to a new home. However, during a long weekend in this new environment, they rediscover the ""magic within"" they've always possessed--powerful knowledge for young adults facing a challenging world.