Hi,
This is a difficult subject for all of us, and how any of us deal with it is very tough and sometimes just plain not fun ... but I am a believer that the most important part of it all is ... wanting to change and find something different, and while that happens, learn something else about the mystery of creativity and where it comes from.
I can't help say, that for you, it appears that it is too easy, because it is all about the notes and the melodies and the chords that you repeatedly work around ... otherwise, your expression would never get bored, or get tired of saying "I love you" one more time, and mean it again ... are you so callous as to not be able to say that and mean it? If so, then you have some serious inner things to look at and the way you look at music either needs to grow up, and realize that ... mechanics ... is not what it is all about ... it might be for some, and that involves luck ... but for those whose inner life never stops, then saying what you did, is weird, strange, and largely a hint that you have lost interest, because you can not blend your emotions into the notes.
You need to find a corner and let it out and cry for a bit.
From a writing perspective, if this happens to me, it means that the old way of writing is now boring and a new way has to come about ... thus I intentionally involve myself in all things that are experimental and off its rocker and defy "reason" in any of the arts, as a way to teach myself ... and find out, while at it, what it is that I am looking at, and if possible, how. Nothing within ... NOTHING ... is worth anything to you other than the "how" ... but the problem is that we get stuck on the how and the why, and forget the child like fancy ... just do it ... and it does not matter what it is.
I was lucky ... I was exposed to nonsensical and experimental arts, that would be music, literature, painting, and many other things considered art, and realized soon, that trying to "find a meaning", is often the worst dead end there is ... but you also learn one biggggggg badddd lesson, while at it. You learn how to work with the feelings, emotions and sounds ... and this is probably the part that is missing for you.
I say invert the way you write ... no more "music" unless you can describe, in its entirety, on a piece of paper, the "complete" thought and feeling you had. And it better not be a song, because the exercise is about a feeling in time, not necessarily a song! Then throw it away. NEVER SAVE IT WHILE EXERCISING. Then do it again. THROW IT AWAY. The point is not to "find" a "method" ... there is no METHOD ... there is only you, a person ... and you simply want to find that inner thread ... but you have to be willing to let it fly and fly and fly, until it becomes easier for you to feel it ... but then, remember ... you have to throw it away ... as the point of the exercise is to teach you to find an inner avenue, and all of these bits and pieces, will show up sooner or later somewhere anyway ... so NEVER EVER feel like you are losing something!
If it interests you, check out one of the most experimental directors in theater in the 20th century ... Peter Brook, and specially, watch the film made about actors learning their craft ... "The Tightrope", and realize that the depth of internal concentration is what creates the "music", or any "art" ... and then you have to ask yourself ... do you wish to work that tightrope, or simply, just continue writing yet another song around the same chord and song?
I'm a believer that the greatest trap in music is "form" ... and when you break it, that it is good for you, even if it sounds awful ... so go do something else ... go watch Godard spend his time for 60 years making fun of film traditions and teach you how mechanical film has become and meaningless for almost all of us ... it became a beatoff ... an entertainment ... because we're so detached from it anyway ... as the muse likes to say ... the father and I are no longer one ... and can't be within this environment ... because you have severed the cord to your inner feeling ... you can no longer say "I love you" and mean it ...
Best of luck is all I can say ... that situation is tough, and I would have told my own child ... look, it takes a force and feeling and commitment that is a one way street to heaven and hell ... and you have to stop moping about and thinking about it ... you either commit to that love care and attention to your inner self to learn ... or go and say it in yet another vacuous way, that makes you feel empty ... and then look in the mirror ... and ask yourself .. why?
It's never the end of the road, and I always loved the end in one Bunuel film ... people walking away to nowhere, on an empty road ... or the end of a Roeg film ... "sometimes you have to drop your pride to love a woman" (and the man promptly disappears -- suggesting that it was all made up anyway!) ... and if you do not know the difference, between the force and beauty and message in that ... you have no feeling ... again ... you need to look far far away, and into your own galaxy, not just this earth.
Let me know when you wake up, and see the world of art and music for what it is ... not just a song! Reminds me of a mystic that said something that at first felt rude, and years later I realized was the reality ... it was about drugs ... and how you either controlled it or the drug controlled you ... and if it did, you are already dead ... and I always shivered at that, but it tells you that the commitment is more a look for an excuse than a reality ... and you have to look inside and find the emotion, beyond a note and a chord ... or these words are meaningless to you, if you even are big enough to read this far.
Wish you the best, but there is no other way to learn sometimes ... you have to strip it completely to "nothing" ... before it has any chance to finding its way home! That would be YOU ... not feeling down about what you do with notes and chords and music!