I think that changing your style is a natural thing that happens if you're really getting into the music that you're exposing yourself to. Listen to everything, and when you find something you like, listen to more of it. Music is kind of like food in that way. I don't like eating the same kind of food all the time, I like different styles of food depending on my mood, etc.

I find that I can pickup new things all the time from various things that I listen to. When I was younger I listening to classic rock sorts of things as a teenager, and tried to copy as much as I could from stuff I'd heard on the radio, etc. I used to listen to alot of the bands with really great guitar playing (Lynyrd Skynyrd, Johnny Winter, Rick Derringer, ...)
But then there were several players who I stared to hear on records that were more Jazz/Blues influenced (Larry Carlton, Robben Ford, etc) , so I started listening to more of that thing and tried to learn from that. THis prompted me to find a Jazz guitar teacher and spend several years going down that path. I started listening to a lot of George Benson, Pat Metheny and guys like that.
In recent years I've started to listen to more country, bluegrass, and rock-a-billy styles and I'm finding myself trying to absorb more of those sounds into my style.

Overall your playing style is kind of like a stew, with ingredients from everything that you've learned or listened to over the years. Everyone's stew is a little different, depending on who you listened to and absorbed over the years.

The best thing that you can do is find those styles that you gravitate to, and go with them, even if they are leading you down a new path. This is what will make you enjoy music more and ultimately make you a more unique player.

--Jim