>>1 it's okay to be unsure about what it is that you want to do with your life, I mean it is a pretty big decision, but just remember that the average person changes their career many times (I can't quite recall the actual number but I remember it being surprisingly high.) My advice to you is to go see a career counsellor and/or an academic advisor, they can help you out. Don't second guess yourself, if you like architecture then go for it, ideas will come to you when you need them :3 I hope this helps!