To counsel someone is to assist them to make a directional choice about their spiritual & psychological direction. Choice implies options. From a variety of options, one direction is chosen. This is the purpose of counselling.
To coach is to assist someone who has already made a choice about their spiritual & psychological direction, to refine the aim, to overcome resistances & obstacles, to take the next step.
Therapy is to assist someone who is unable to help themselves. Sometimes the assistance requires diagnostic analysis. Then the person is offered a way or some ways by which they may be assisted in the difficulty. These are some of the main methods of assistance:-