What to do next?

What to do next? I am 17 years old. I stammer. For the past year I have been addressing my stuttering (voice blocking) by reading books about stuttering (some from NSA's website, and what i think as a gem - "Refining stuttering" by John C. Harrison), getting involved in more speaking situations, and fundamentally changing the way I look at stammering. Now it is different - my motivation has declined, not because I do not have the strength to continue, but because I do not know what to do specifically that will gradually improve my speech. Has anyone else encountered such a problem of not knowing what to do next to improve fluency? I would love some suggestions of what course of action I could take to further improve MY fluency.