How do you get past a block?

How do you get past a block? Hey all I'm a 27 year old female who does block occasionally on certain words. I've come to accept that speech is not perfect and am not striving for perfection since that would make my life a misery to do so. However one aspect that does bother me is blocking. I have a tendency of saying 'uh' 'uh' 'uh' repeatedly before I say the word I am blocking on. This makes me feel stupid and just brings me down a bit. Does anyone know any methods for me to break this 'broken record' filler?