Welcome to the club...
To reduce the feeling that you don't have the right lens attached to your camera, try this exercise: Put a prime lens on your camera, for example one of those 50's, and make a deliberate effort to go out and shoot with just that prime for a certain time. Like, go out for an hour or two, and shoot only with 50mm. Or keep the camera with you the whole day, and shoot only with that one lens. It will make you think differently, or see differently and you'll learn how to use whatever focal length you have with you at that time.
Learn to sell lenses you don't use.
And yes, it's the job that dictates the tool, so if you plan to shoot macro, buy macro. If you plan to shoot wildlife, buy telephoto. Buy whatever you feel like buying, but if you don't really use it, don't be afraid to sell it.