What would mean this needs more than a course
These are here in lesson one, not buried at the end, because a person in a bad enough state may never reach lesson six.
Most days for two weeks or more, and it is not lifting. More than an hour a day going on worrying, checking, or preparing for something that has not happened. You have stopped doing something you used to do, a place, a call, a route, the masjid. Wudu or salah is taking twice as long as it used to, or you are repeating either. You are drinking, or using something, or taking more of a medication than you were given, to get through the day or the night. Someone who lives with you has said something.
And one that goes to a doctor before it goes anywhere else. Chest pain, fainting, or breathlessness that has not been checked.