I can't compose

I have been trying to compose every single day without writing a single note on the paper. I have a huge range of materials, harmonic sketches, rhythmic fragments, melodic gestures and even though I cannot compose.

I am missing the linking point. I am trying to find it, but I am struggling with it.

I tried to start composing every instruments at the same time, but both final results were not satisfying (image 1 and 2); then I created a single line (using chord 1 and its different polarities and inversions) which I could use as motivic gesture to not only work as melody but also as accompaniment and bridge for the rest of the quartet (image 3). The material is good, but I do not know what to do with it.

Image 1 - 1st attempt in composing

Image 2 - 2nd attempt in composing 

Image 3 - creation of a single line to work as melody and bridge between the guitar and the string quartet

I think there is missing something, a single motif, gesture, or whatever, that makes me connect everything I have in a solid way. So far I feel that everything is good but not solid.

I will just keep working until I discover what I need. For that, I think I will go for a walk at the 'library of music knowledge’.