Changing positions

I’m 15 have been a striker all my life but last year I got played left back on my old team and I enjoyed it this year in my new team I told them I’m a striker but I am seriously considering playing left back again as I feel I can contribute more the only problem is is my dad always wanted me to be a striker and I don’t want to let him down but for the sake of my career it feels I should be a left back what do you guys think?