What are you listening to ?
Do you analyze a great variety of music ?
If you sound like them, then you are majorly influenced by them.
And how do you want to sound ?
Listen to such artist, get influenced.
A reminder, some people get confused (don't want to sound preachy or smth,
just it seems to me from what you explained, are you open to different artists, genres ? ):
Creativity is a mixture of ideas. Not some magical phenomena out of thin air.
You may come up with melodies, that you think are some kind of out of this world.
But because it is a result of a great bunch of melodic ideas from the past stuck in your unconscious.
Try different approaches.
Sometimes I decide, that I want to create a melodic line or a lick, something like the particular artist, and transcribe the song, and play around with it, the same chord progression, and boom, I come up with something similar sounding, what I like etc.
Also I personally make a habit of analyzing different artists, even if I don't like them at the start, but people consider them as great artists. So I listen to them till I understand their beauty, and analyze my favorite songs.
For instance, I was never fond of Muse, I've listened to their whole discography,
and then the album Black holes and Revelations, was just something I was amazed and a personal discovery for me.
Then I analyzed them, transcribed their licks, melodies, looked at the song structure, the instrumentation and finally by whom they were influenced. And guess what,
they applied the same principle, this album was influenced by the music they were listening to.
A couple of examples :
"Map of Problematique" (probably my favourite) - influenced by Depeche Mode " Enjoy the Silence"
"Starlight(major hit) - originally intended to create something like The strokes "12:51"
Now yes, when you listen to them side by side, they are similar.
But at the same time, they are completely different, their other musical experiences made that difference.
And this technique was used by classical composers for centuries.
Cheers,
K
P.S.
Now I'm into Sigur Ros and
some out of this world dub step project
Koan Sound