Music is one of the things that has tremendous healing power. It reverbrates through your brain, reaching every nook and cranny. You can verify this for yourself if you consider how many songs you simply start singing along with, no matter how long ago you've heard them. It is like all those lyrics have been woven into your mind, each on their own thread, ready to be selected by the very first (few) note(s).
As the lyrics go, they are also interwoven with the words you use in daily life, giving those a certain resonance frequency. This in turn will help you express yourself better, and you'll see that your taste in music changes over the years. I for instance used to love Tarot's "Suffer Our Pleasures" album, but never play it anymore. Another one more powerful came to take its place though, like for instance Edward Reekers' "the Liberty Project". And then there is my lifelong fascination with everything that Arjen Anthony Lucassen, the mastermind behind ayreon and many other projects, has created over time.