What I figured that helped myself in improving my mood (this is not related to the speaking practice itself but just the internal emotional part) is to write out the thought patterns that occur on a regulat basis when I was not able to say what I intended to and to frame them in a way that works as a solid fundament for any speaking situations. I boiled the thoughs (or the list I should say) down to about 30 sentences I read when the day was rough and by now I no longer need to. For example today: I ordered food and got stuck on the A of Ananas (which is German for pineapple), had a block, took some deep breaths, finally managed to say it. While the cook was preparing the food I experienced just a mild emotional hit because I knew - due to my list - that this situation could occur and that I would cope with it by just being happy that I said what I wanted (no matter how) and after that its done. I dont judge the situation or think again about what I could have done. I have my techniques. I use them. ANd I dont have to think about it after each of those everyday encounters. Now its more of a tinkering process to reflect how to improve and that makes a lot of fun. Its no more a depressed feeling inside when thing dont check out. After every speaking situation I know that I have put myself out there and earned the meal I intended for example. Just stay in the situations until you received what you wanted guys. Stay true to yourself and dont be mean to yourself for having been brave enough to enter the shop/mall/restaurant.