No clue on what I have become

i am working in a top notch company, doing well as a professional there, living an independent life, i play football, i run/ go to gym regulary. this is the life i imagined as a kid, i have all i wanted. yet all of this feels empty to me, like i have it now it doesnt amount to much. i really liked a girl last year, we had great conversation for a while, we vibed, i felt i found the 'one' - the missing piece to my story. but when i confessed to her she didnt reciprocate the same, it hurt me and i let everything go, eventually i did amazingly well in my company that led to me getting a great hike, i always was fascinated by money as a kid but this was that one time i didnt desire for the same. i have become a frequent smoker now, i want to quit it but its the only thing that is making me go through my life and when i look at it i have everything that i need yet it doesnt feel alright.