How to Be an Adult in Relationships explores how emotional maturity and self-awareness are essential for healthy and lasting relationships. David Richo explains that many relationship problems come from unmet childhood needs and unconscious emotional patterns. The book introduces the idea of “mindful loving,” where love is based on awareness, acceptance, and responsibility rather than dependency or control. It outlines five key principles: attention, acceptance, appreciation, affection, and allowing. Through psychological insight and reflective exercises, the book helps readers develop healthier ways of loving and relating to others. Themes include emotional maturity, healing, attachment, self-awareness, and conscious relationships.