At every stage in one's life, an individual will experience mental well-being problems. Your thinking, mood, and the way you go about life will be affected by this. Being aware of this is really important.
There are many factors that contribute to mental well-being problems. It could be biological, it could be life experiences and it could be one's environment in general. This is why it is good to be as self-aware as possible.
Mental well-being is important for maintaining a good quality of life and self-awareness is key in addressing it.