The type of therapy you might be offered will depend on your situation. The main types here:
Counselling
Counselling is a form of therapy where you can talk about any of the issues, past or present that might be difficult for you. The counsellor is trained to listen to you and to help you try to understand your thoughts and feelings. They can help you deal with some of the negative feelings that are causing your mental health problems and encourage you to try different ways of coping with these feelings.
You can go to the NHS website to find out more.
Cognitive behavioural therapy (CBT)
CBT is a therapy which involves talking about current problems and how you react to them. You will often be asked to name a situation that bothers you and then list your thoughts and feelings in response to them. Your therapist will talk with you about how you judge the things around you and help you to look at and evaluate situations better which will then change the way you respond to problems. By changing your negative and counterproductive thinking style, your mental health problems should improve.
You can go to the NHS website to find out more.
Mental health and medication
A doctor may prescribe medication to treat your mental health problems, and you may find that this can have huge benefits in getting your life back on track.
But as with any medication you may experience side-effects; you should always feel able to ask the doctor prescribing your medication for details of possible side effects so that you know what to expect, and can make an informed decision about whether the medication is right for you.
The Mind website provides information on the kinds of medication which you might be offered to treat a mental health problem.