It means that the song you're listening to has an impact on you. It could be negative or positive or inbetween. When a song hits hard it influences or affects you in some way.

The lyrics tell us that live must move on especially when we think positively. Positivism will only come with good music because One good thing about music when it hits you, you feel no pain. This shows that the impact music has on us as a person is incredible.

It reflects the therapeutic and comforting power of music suggesting that its impact is soothing rather than painful.

A large number of studies have provided considerable evidence that music can decrease pain levels. Pain relief may occur by the release of endorphins or changes in catecholamine levels or as patients are distracted by memories away from their pain.

The subjective experience of music across cultures can be mapped within at least 13 overarching feelings amusement joy eroticism beauty relaxation sadness dreaminess triumph anxiety scariness annoyance defiance and feeling pumped up.