What is a mental health problem?
Thursday 10 October is World Mental Health Day.
When people say mental health, they are talking about how people think and feel, and how they are coping with things that are happening in their life.
It is completely normal to feel sad, angry or worried from time to time. But when those feelings won't go away and they start to really affect day-to-day life, that is when there can be a problem.
Watch the video to find out more about it.