I am not a diagnosed with stuttering but I have same problems from time to time and I don't know how to overcome it.

I am not a diagnosed with stuttering but I have same problems from time to time and I don't know how to overcome it. I speak and I stutter on some word, cannot keep an even flow. I do it every 10th word or something. I try to speak everyday but it seems that generally I don't get any better. Maybe I should train it somehow? I feel that I might have a problem with expressing what's on my mind and generally doing long sentences.