That is a great quote from Voltaire. I love it too. When ever I´ am in a good row or plan and my mind says to me "Hey maybe you can do it even better" I remind my self of this. I strongly think that you are in the right path. Just have patience and keep going. It is exactly that type of mentality that I can clearly see from your writting that will make you triumph. Not being a stutter is not about 100% fluency. That is a very hard thing to achieve. Even "non-stuttering" persons are not that fluent. They stamble on they talking too. Be grateful for any advances and step by step you wil improve your percentage of fluency.