How can I start enjoying high school and is it even possible?

I have just come back to school a few days ago after the summer holidays and I have just entered year 10 so I am 14 years old.I have been sitting in my classes just thinking why am I not enjoying this and trying to make it more enjoyable like getting really involved, talking to people and trying to be enthusiastic about the work or what ever we are doing but it doesn't work and it is really boring and my teachers are stressing me out.The only reason I go to school is because of my friends who are most of the time really good to me but they rant in many of my classes.I don't know what to do so if anyone has any advise on making these next 2 years at high school more enjoyable please help because I am already sick of it and O haven't even been there 3 days.