I'll try to explain. This is my experience and may not hold for you. Let's say you want to order a hamburger with lettuce and tomato. And the whole time waiting to order, you are worried about saying tomato because you can't say T's, and you contemplate not asking for the tomato at all even though you really want it. So now it's your turn to order. You decide to try asking for tomato. You block on tomato for 10 seconds. You feel dejected. You failed. Now this is what I mean.. Dont connect that blocking on tomato as an unsuccessful speaking exchange. You wanted that tomato and damnit you went ahead and did it. Did you get what you want? If so, that's a success. If you constantly connect fluency with effective communication, you are going to be constantly bombarded with negative emotions. Do you think a "fluent speaker" thinks about how they are going to say the L in lettuce or T in tomato? No, they think about how hungry they are, and they really want a hamburger. Then they get it, eat it, and are satisfied with the whole transaction. Stutterers, we add fluency into the mix of transactions and it blurs our judgement of what the end results of our interactions are. I hope this makes sense.