Gildas Garrec is a certified psychotherapist in cognitive behavioral therapy (CBT), based in Nantes, France. His practice combines the most established clinical approaches of contemporary psychology - Bowlby's attachment theory, Young's schema therapy, the Gottman method for couples, acceptance and commitment therapy (ACT), and mindfulness - to support adolescents and adults dealing with relational, anxiety-related, and self-esteem issues. He is the author of ""The Essentials of Applied Psychology"" series, in which he addresses, in an accessible yet rigorous way, the topics his readers encounter in practice: toxic relationships, avoidant attachment, emotional dependency, breakups, infidelity, parenting, and anxiety. He has also authored over 1,000 clinical articles and developed 68 validated psychological tests available freely online. His writing rejects two pitfalls of the market: inaccessible clinical jargon on one hand, and shallow self-help on the other. Each book draws on verified scientific references, presents anonymized case studies, and offers practical exercises that readers can implement on their own or with a therapist.