When I went into year 12 I was so unsure about what I wanted to do.
Family, and some teachers always said "you should study this and that because it's prestigeous/respected etc". "You shouldn't study this/that etc because it's useless, you can't make a living out of it, etc".
I loved art and wanted to do that, and maybe media too but people said I was too clever for that! In the end I did English, French, DT and Maths (AS only).
Honestly, to this day, I still regret taking DT and maths especially. DT was fun, but now ultimately useless to me.
I studied media at uni so in the end it didn't matter too much but I'd also wanted to study RS at A level but people told me it wasn't important. (I'm 23 years old now). I'm still happy I did English and French though.
Basically, what I am trying to say is DO WHAT YOU LIKE / WANT.
I'm doing stuff I like now etc, but you know there are many people who end up doing things they don't enjoy because of bad advice (I know these people only want the best for you but I firmly believe you should do what interests you the most because then you will always do well!)