Honestly, I hope that anybody who's reading this doesn't think that I sit around listening to my own music all day and patting myself on the back, it's just that working up new material has lead me to once again examine the creative process, and in turn come to grips with the notion that whatever you create should always be an accurate reflection of yourself at the time. Forced enthusiasm is usually transparent.
Sometimes you write a song because you think, as you're writing it, "this is going to be really fun to listen to," or "this has great energy," etc... It's nice to get excited about the parts which you feel will resonate with the audience. And then sometimes you write a song because, as ridiculous as it sounds, you kind of have to. It's cathartic. Perhaps the first method is more enjoyable from the standpoint of a listener, but it just kind of provides a different thing. One is something you almost connect to physically and the other is more of a voice or personality trying to work its way off the tape, desperate to be heard, and when you connect with that it brings a different kind of joy, maybe something that can't accurately be described as pleasure. Does that sound stupid? It's a bit like a bran muffin versus a cupcake. Now, I know there's no way THAT sounded stupid. Note, I am not implying that recordings which contain one quality do not contain the other, but sometimes these qualities are manifested in ways that are not immediately obvious.
Anyway, this is getting quite scattered and vague, but I'll close this by saying that I think it's important to keep moving forward, not to let yourself rest as a musician in one particular place for too long. That way, you can return at any time to your previous creations and think, "that was me at one time," and hopefully be able to mark the ways in which you have evolved, both as a player and a person. One fortunate (or unfortunate) aspect of music is that it is very much a record of yourself, a topographical map of your emotional landscape, and sometimes it takes a little bit of time away before you fully discern your own peaks and valleys.