Here are the steps to achieve the "Mental Health Achievement" in Honkai Impact: SkyLink:
Answer: We need to give five junk props to NPC Gray at the Dream Frontier to get the achievement.
1. First, we open the map and go to the location shown in the picture below in Dream Building Frontier.
2. After talking to the NPC Gray here, use the clock trick on Gray, and then complete the sudden task.
3. After we complete the task, continue the conversation with Gray, and then select "I brought garbage".
4. After we deliver the five junk props to NPC Gray, we can obtain this achievement.
The above is all about how to achieve the mental health achievement in "Honkai Impact: Star Rail". For more game strategies, please click on the source code website.