I have a hard time saying my name as well. What helps me is using what is called the easy onset technique. It is kind of hard to explain, but it's kind of like barely pronouncing the problem parts of words. For example, my first name starts with Br, so I barely put my lips together when making the Br sound. I feel like it doesn't tense my mouth as much, so it prevents blocks. I also say it on a heavier exhale than one usually does when speaking. It kind of forces it out while still being able to keep my mouth relaxed.