I know the feeling. Best thing you can do is to start to get an idea of what you desire of yourself, even the little things, and concentrate on that. As you are 14 it is not long now before you will have the chance to move onto a new stage of your life and build your own family of friends around you.
I would advise working on yourself a little bit and see what adjustments you can make to make yourself better for you (not for anyone else atm). I would also look at how your relationship is with your family and if it is strong enough try and keep it up but if it is too weak start adjusting for it.
You are close to the starting of your independent life so you have weathered the worst of the storm, you just need to prepare for the next stage now to make sure you get a good start.
I would also add, expectations are not a bad thing. What I do with others expectations of me is, I gauge them.
-I decide if they are first reasonable (I am not sporty so someone expecting me to win a marathon is not reasonable).
-Then I decide of it is something that will make me a better person (even an enemy can give you helpful insight to make you better)
-Then I decide if and how I can make the change. most changes are best done gradually.
There is really no handbook on this sort of thing, but random chats with adults about things can give you helpful insight (just about their past or things they have done). Also, if you need something more specific a school counciler could be of some use, at the very least in helping you make sense of some stuff.
Hope you get something useful from that
