If you think psychotherapy might be helpful, the first thing to do is arrange a consultation meeting.

The first consultation meeting is important, and you can expect the psychotherapist to be interested to find out as much as possible about the kind of difficulties you've been having, and what sort of changes you want to make. This will involve thinking about things that are happening now, and things that have happened in the past, especially when the two seem connected. At the end of the meeting, the therapist should summarise what they think are the important issues from a psychotherapeutic point of view, and give an opinion on whether or not they think psychotherapy is likely to be helpful.

If there is an agreement to work together, you can expect the therapist to say something about what's involved, and they may suggest that you go away and think about it for a few days before making your decision.

It's very important to talk frankly about fees and appointment times because you will need to reach an agreement about the costs and frequency of sessions that is both realistic and sustainable. 

Psychotherapy involves weekly sessions and is not a "quick fix" solution. In my own practice, I tend to see people for between 6 months and 2 years, and my usual fee per session is £40.