Hi. Yes, it totally is possible. I blocked terribly from the age of 10 to maybe in my late twenties. I still do, form time to time, but everyone I speak to about it always says they've never noticed it. I ended up teaching myself what made me block (its harsh vowels at the begginning of words) and made a huge effort to either use another word, or brute force myself into being able to say them. I started a twitch stream about stammering a few weeks ago, and I do one every Wednesday and Sunday evenings (UK time) if you'd like to ask me things live, it's at [https://www.twitch.tv/bowdiestammers](https://www.twitch.tv/bowdiestammers)