While it might not be something that we all feel comfortable talking about, we all have a lot going on inside our own heads. While we might want to just think happy thoughts all the time and think positively, it is inevitable that things are going to happen that might cause you anxiety, to feel confused or might otherwise affect your emotional health.
This design is meant to help stop the stigma that surrounds being honest and speaking about about issues that you might be having with your own mental health. Someone you know might be dealing with anorexia and afraid to talk about it because it is a "girl's disease" or suffer from clinical depression and is scared to come forward. Silence can hurt and this design is meant to show that you will listen and do your best to understand.
The best role models are the ones who are willing to lead by example. This design is also about being willing to speak your mind about your own mental health struggles. We do not need to hold everything inside and this is a subtle way to express yourself in an honest way.