1. Understand the reason: First of all, understand the criminal's personality and psychological state, and understand his inner contradictions and conflicts. Only by knowing their true feelings can we better educate and help them.

2. Guide emotions: For unhappy criminals, we can help them adjust their inner emotional state by guiding emotions.

3. Stimulate self-confidence: help criminals build self-confidence and guide them to face life and problems more actively. We can improve their self-esteem and self-confidence through some words of encouragement and affirmation, and help them get rid of negative emotions and face life more positively.

4. Cultivate interest: For unhappy criminals, we can guide them to cultivate hobbies, so that they can find happiness and satisfaction in their interests. We can help them explore their hobbies, broaden their horizons and enhance their psychological quality by carrying out some cultural, artistic and sports activities.