Riva Kajangu shares 12 life-changing principles in his episode 'A Vessel at Sea Needs the Correct Navigation to Get to Shore.' He emphasizes the importance of clear vision, positive action, regular exercise, learning from mistakes, striving for excellence, sharing positivity, learning from tough experiences, focusing on the present, setting ambitious goals, listening more, checking progress, evaluating routines, and never feeling superior to others. These guidelines, drawn from personal experiences and insights, are aimed at guiding listeners toward a life of continuous improvement and personal growth.