★ New 2025 work by Japanese psychiatrist Tomoya Fujino! His interview on YouTube channel ReHacQ sparked tremendous response, and he has over 130,000 SNS followers!
★ Introduces the core concept of “psychological boundaries”, directly addressing pain points like “inability to say no” and “overwork” among professionals, and provides a 5-step boundary-setting method.
★ The author holds triple qualifications: psychiatrist, industrial physician, and certified psychologist. He draws on his personal experience of working efficiently despite a heart disability, enhancing the method's credibility.
★ Covers a full-process solution from “self-awareness → relationship handling → dealing with boundary violators,” suitable for young professionals in high-pressure environments seeking “interpersonal decluttering” (simplifying relationships).

Are you troubled by these issues?
· Difficulty saying no to others
· Always too busy, with no time for yourself
· Easily influenced by strong-willed people
· Frequently waiting for others
· Often pushing yourself to meet others' expectations
These troubles may stem from a failure to “draw clear boundaries” in relationships. The “boundaries” in “drawing clear boundaries” refer to “Boundary (the line between self and others).” Boundary is “the dividing line between self and others,” a psychological demarcation that separates one's own “time,” “emotions,” “values,” and other “personal domains” from the “domains of others.”

Failure to establish such boundaries properly often leads to:
· Taking on tasks due to inability to refuse, losing personal time
· Overloading oneself with others' work, striving excessively
· Suppressing emotions, accumulating stress
· Acting according to others' values
· Becoming overly irritated or anxious about others' words and actions

Psychiatrist Tomoya Fujino, with 130,000 X followers, introduces techniques to resolve these troubles based on “Boundary” thinking in this book.
Mr. Fujino has a heart disability (coronary artery aneurysm) from childhood illness, deeply understanding that “time is life.” Today, he excels as a doctor while simultaneously engaging in writing and social media activities, precisely because he consciously establishes Boundary and “draws clear boundaries” in relationships.

“Your time is limited. Even if not entirely for yourself, at least you should decide for whom it is used.”

By establishing your own boundaries and protecting your domain, you can:
· Reclaim your time
· Cherish important people
· Interact with others with appropriate distance
· Not be swayed by others
· Do what you want to do

Join in learning the practice of “drawing clear boundaries” in relationships and master the trick to making life easier!

Tomoya Fujino

Psychiatrist, industrial physician, certified psychologist. Born in 1991, graduated from Akita University School of Medicine. Due to Kawasaki disease in childhood, he has a coronary artery aneurysm disability and continues treatment today. Through the mindset learned from living with a disability and his insights as a psychiatrist, he actively shares his views and has appeared in numerous media programs. Has 130,000 SNS followers. In addition to working as a doctor in psychiatry and medical prisons, he is actively engaged in writing.

Chapter 1: What Is “Drawing Clear Boundaries”?
Chapter 2: First, “Know Yourself” to Draw Boundaries
Chapter 3: Drawing Boundaries in Relationships
Chapter 4: Respecting “Others' Boundaries”
Chapter 5: Not Being Swayed by “Boundary Violators”