Polish is quite difficult to learn. Well atleast for me as i was not exposed in situations where i only had to speak polish. But i kept learning and now i can hold conversations at decent level. I had bad stuttering growing up in my native language. I was in school when i noticed that when im reading English passages i dont stutter. My english teacher noticed as well and she would always made me read english passages in every class. Then i moved to UK and very quickly started speaking it as well and Stuttering reduced to minimum. But when i visit back to my country and speak Urdu or punjabi and i still stutter. In polish i dont stutter at all because i have to think alot before structuring an sentense and that give me alot of time to use words in a way i dont stutter.