I've read and heard that some of the most inspiring vocal interpreters adhere habitually to one rule: Always think the lyrics as you're singing them, so that the sentiment is always appropriate and heartfelt.
Sentiment: POSITIVE
When I hear someone, instantaneously, I'm like, 'Who's singing?' You're giving people so much of yourself, and my voice is the most natural, distinctive tool I have. It's up to me to express myself on a wider scale than just writing vocal melodies and lyrics.