While I haven't had that feeling with this game, I have had that feeling with other games, and I know what it feels like to finally beat such a game after years of it hanging over you.
You can do it!
Haha thanks. I'm at the part where I have the flying airship, and I'm going to get the third huge materia from the underwater reactor in Junon. So far I've had no problems at all, so I'm hoping that's a good sign for the rest of the game.