If you're uncomfortable driving and think you need a professional driver to teach you, lessons are the way to go. They are expensive though.
I had one lesson and I failed my Ps the first time. I choked under pressure but it gave me an idea of what I needed to improve for the next test.
The second time I took the test, it was easy because I knew what I was lacking (tested the next week). Just need to be calm and have the mindset, that, if you know how to drive you can drive anywhere. That was my mindset seeing as I took my test at a RMS/area that I was unfamiliar with.