How to deal with blocks?

How to deal with blocks? So basically, i stuttered all my life and it was really bad when i was young but it improved a lot since then . now i am 21 year old . And i Don't repeat the same word like i used to i only have problems dealing with blocks. Mostly i have problem with words like a,n,i,u,e. Is there any way or tips or tricks that has helped you deal with yours blocks please suggest them to me .