Have you been going through something?
Try to gather the courage and switch to healthy options like joining a gym, setting targets for yourself.
I know how it feels.We all feel empty sometimes.Listening to music is good .Why not start a hobby with music.
Everytime u wanna smoke remember its not a neccessary thing but its just waste of money.
I would say ask yourself honestly what lightens you up? And be prepared even for irrational answers. Just be honest and don't judge yourself. What lightens you up really? You have a lot of hope inside you its just that maybe there is an obstacle in your way identify it.
Firstly, quit smoking. It's gonna help in NO way whatsoever. Is there something else bothering you? You can share!
Hang out with friends, do whatever you love (like the music you mentioned), and find the will to live life to the fullest and achieve your goals :)