Counselling
Although Yellow Pages still lists counselling under a section headed "Counselling and Advice", the two are really quite different - even opposite in meaning. Modern counselling is not about telling you how to run your life - it helps you to run your own. These days it makes more sense to think of counselling as a kind of psychotherapy, but focused on particular issues. The difference is in the time-scale, as much as anything. Counselling typically lasts from 6 weeks (short) to 2 years (long); psychotherapy usually from 6 months to several years.
Some things take longer to explore than others. If you were upset at the ending of a relationship, and finding it difficult to concentrate at work, you might think of counselling rather than psychotherapy. But if someone was severely abused in childhood, and had a history of severe depression, self-harm, with perhaps an eating disorder thrown in, a psychotherapist would be a wiser choice.
Whether counsellor or psychotherapist, a properly-trained professional, seeing you for the first time, should be able to advise you about a suitable way forward for what you want to achieve, and give you some idea of how long it might take.