I've gone through this same thing man. And, (the good news) i've gotten through it.
What I'm hearing from you is, "I hear what I want to write in the clubs and in my head, but it doesn't come out that way" - Is that fair to say?
I've also heard you just say a colleague of yours is writing things that are much closer to what you want to write - correct?
Solution:
You have to break your writing pattern, re-invent, re-think.
1) watch your colleague write, what is he doing differently?
-is he using different sounds? Kick, snare, hats, bass, leads?
-maybe he's using different rhythm patterns?
-Does he start his writing process differently? Beats first, Vocals, melody and Hook?
You need to understand what it is that brings his music closer to what you want. Analyze this. Change your way of thinking.
2) Make Specific Steps and Rules for writing for this new style:
Only add sounds that are similar, (or the same) as the sounds in the music style you want to write.
Only add rhythm patterns that are the same
Arrange the music the same, (intro, verse, chorus, verse, chorus, breakdown, build, chorus, outro.....)
Remember Music Styles are differentiated by specific things:
1)tempo
2)rhythm patterns
3)specific percussion instruments
4)specific bass
5)specific keyboards
6)lyrical tone and style or lack there-of
7)arrangement
Your Music isn't fitting the style you want because you are not matching one or more of these categories.
Analyze, interpret, conclude, plan and then Execute. This is not about creativity here, you have to re-train your brain first. Practice, repeat until it becomes a new second nature.
Once you are able to do these categories un-consciously, you will then become creative and your original ideas will flow through this new paradigm.
Hope this helps.

Tod