Well, I was somehow guessing it had something to do with the 'gray matter', but hoping for an easy fix never hurts, right?
Anyway, I found it very hard to concentrate while masturbrating. Inevitably, I start thinking about school, the past day, name it. In addition I'm also very easily distracted, the faintest sound makes me jump. I started using earplugs to get around that, but it is by far no ideal solution :-)
I learned that time passes by really quickly though and like I said, I sometimes easily lay here for an hour - which is hardly healthy I guess. My hand is sore afterwards anyway :-) But I tend to be really childish right then, as in 'five more minutes, please?'
And yes, perhaps the most problematic thing is that I do desperately want an orgasm at those moments, which make me forget that it should be actually fun what I'm doing, instead of frustrating.
Maybe my motivation is wrong as well. I'm mean, in the past I hated sexuality, well, because of the way my body was back then. I tried to suppress it. Now all of the sudden it's the opposite, I want to taste what everyone raves about. But the subconscience seems slow to follow though.
Well, any others tips are still welcome :-)