Simply put, I think it's about desperately wanting someone that you can't or don't have, no matter how hard you try. That the more you try, you more you hope that you can make something happen, even when you question if you're worth as much as you think you are, and if your efforts will ever lead to something. But still, you have to keep on, because "I am an island, and you are the ocean" - you are a small part of yourself, and they are the huge piece that completes you.
Simply put, I think it's about desperately wanting someone that you can't or don't have, no matter how hard you try. That the more you try, you more you hope that you can make something happen, even when you question if you're worth as much as you think you are, and if your efforts will ever lead to something. But still, you have to keep on, because "I am an island, and you are the ocean" - you are a small part of yourself, and they are the huge piece that completes you.
That's my thoughts on the song, at any rate.