No idea what to do with my PhD research I am a PhD student in my second year. I have not published anything yet and I feel my results I got so far are not publishable. I have two years left. I am stressed and I am afraid that I might not be smart enough to be a PhD student.
I think I lack the skill to ask a good question and answer that question as a part of my research. I cannot come up with a good idea or question so that by following those I can publish.
Anyone with the same experience, what did you do to get yourself out of this situation?



Edit

Just to clarify more. I am in Europe. Here there isn't any coursework. I studied everything so far on my own. Everyday I go to my room in the lab. I have plenty of time, at least 8 hours per day and if necessary I can spend more time too. I don't have teaching obligations. 
Sometimes, I might have an idea, which ultimately turns to be useless, but even then I tell my self if it was possible to turn into a publications, others would have done that, so it must be a hard problem or idea.
My main issue is that there is no other person with my background in the lab. People with different backgrounds are a PhD student here and everyone works on his/her PhD almost alone. I wish I could pair to another student and brainstorm and discuss different ideas. However, it is not possible here. I told my supervisor, he replied first you should prepare some initial results so that we can approach others group for collaboration. But even then I won't discuss with another person on a daily basis because of the distance between those groups which are in other countries.
Don't panic. What you're feeling is very common: so called "impostor syndrome" (where you feel that you're not good enough to be there) is very common in academia. 

Talk to your supervisor about how you're feeling, and try to narrow down the focus of your research question. You have plenty of time still, but its important you take the time to understand exactly what your work is trying to answer, which will in turn help you understand where to focus your efforts (for gathering data, publishing papers, etc.).

Some supervisors are more diligent than others, so if you feel yours is too busy or not providing the help you need, don't suffer in silence but talk to someone else. Many institutions have some form of tutor system, or faculty position devoted to helping out students that are under pressure or struggling.