For me whenever i Preplan sentences when i,m going to buy something from the supermarket and I stutter whenever i repeat sentences like 1 large bread and 2 eggs then after i reach the counter to ask for these i can,t say a single word but from now on I started to replace these Preplanning with Positive self talk which i learned from a YouTube guy who makes really good videos on Stuttering For example these three lines i use "Every day and in every way my speech keeps getting better and better" "I,m a Highly Competent Speaker" "I love speaking " These three lines help me to stop Preplan sentences in my mind which causes me to Completely face Blocks. But now i don,t face any block i just face a mild stutter infront of the shopkeeper