Haha, it's quite alright. Glad to see you post here though! I've also got a speech block, and find I don't have it when I'm drunk, either. Perfectly normal. My tip is to find some active hobby and pick it up. For me it's either biking or skiing (depending on the weather). But if I miss a scheduled ride, I can definitely notice my speech get worse. That's my unprofessional tip. :)