Roman Gelperin

• Motivasyon Rehberi; Erteleme Bagimlilik ve Tembellik Psikolojisi
• Addiction, Procrastination, and Laziness
• Addiction, Procrastination, and Laziness: A Proactive Guide to the Psychology of Motivation
• Adicci�n, Procrastinaci�n y Pereza
• Depression and the Immature Romance
• Depression and the Immature Romance: A Constructive Guide to the Causes, Cures, Types, and Secret Inner Psychology of Depression
• Master Mind of the Self-Actualizing Person
• Self-Actualized by Poker