That is something that takes a long time to rid of. For me, I run into that too and unfortunately even as a professional I would like to be much,much better at "phrasing"; which describes your issue. I have found the best way to work on this is to simply transcribe; learning some solos that you feel get the point across accurately and very expressively. You start to emulate those players you like and I feel with time it settles in that you can express yourself in a similar way.

Another exercise you can try is only playing "chord tones" while you solo. By "chord tones" I mean only playing notes in your solo that are part of the chords you are playing. For example, if you have a progression that is 2 bars of A major, than two bars of E major; than you only solo playing A, C#, E over the A, and only solo playing E, G#, and B over the E major. While this does not sound too exciting at first, this forces you to slow down and think a little bit about what your doing; which is not a bad thing. Here is a tutorial Anders Mouridsen did on this concept, utilizing the blues as a foundation;

http://guitartricks.com/tutorial.php?input=756

At any rate, those are a few examples that I think may help. Let me know if you have any more questions.