A happy life is a boring life? Sorry, but I can't relate to that. How is there beauty in sadness?
Anyway, what matters is the lyrics and not the melody or instruments. The music itself is a very strong medium into the subconscious mind as it loves patterns. This is why the lyrics has such a strong influence in your subconscious behaviour. I suggest listening to HunaTrainer podcast #012 over
here. It starts at about 13 minutes.