People react differently to the inability to know what will happen next. For some, the unknown seems exciting, others rarely think about it and simply continue to live, others see in this state a danger, and even a threat to life. Feelings of uncertainty can arise in a variety of situations: the first day of school, an exam or a new job, when meeting someone, or during the physical and emotional changes of adolescence. And then the inability to control your present and future leads to a state of catastrophic foresight. The mind seems to become fixated on impending disasters. In such a state, a person is only sure that he will not cope. If this has happened to you, you probably began to look for a sense of stability in at least something: creating a detailed schedule for the day, overloading yourself with studying, endlessly thinking about upcoming meetings and trying to plan what you will say and do. Or maybe you avoid anything that might make you feel uncertain, such as hiding from everyday activities, not going to school, or isolating yourself from others. The authors offer a workbook that will help you develop the skills you need to embrace uncertainty. Also on the pages of this book you will meet stories of teenagers with similar problems and understand that you are not alone.