How do i stop saying stuff like that in a business meeting?

[bobbby bb]

I kind of got used to saying "stuff like that", or "things like that", or "you understand?". I want to stop saying it.. i feel like when i loose my train of thoughts, then the stupid statements kick in. What should i replace it. what should i say... I realized i said it so much that the guy interrupted me when i was speaking and he said "STUFF LIKE WHAT"... then i lost all my memory of what i was talking about. So embarrassing. Please help