Crossing the river of change requires that you leave the same familiar predictable self – connected to the same thoughts, same choices, same behaviors, and same feelings – and step into a void of the unknown. The gap between the old self and the new self is the biological death of your old personality. If the old self must die, then you have to create a new self with new thoughts, new choices, new behaviors, and new emotions. Entering this river is stepping toward a new unpredictable, unfamiliar self. The unknown is the only place where you can create – you cannot create anything new from the known.
Recommended reading: Breaking The Habit of Being Yourself: How to Lose Your Mind and Create a New One.