Hey, im I'm junior in high school and I go to the top school in my state. As a result I have extremely high expectations of myself and take hard courses just because I need to compete in order to get into high level universities. 
I don't know what happened but I used to be super motivated and got things done and did well in my classes but now I can barely muster up the energy to solve one problem. Every task feels demanding and I can't get myself to do it. 
I just sit there in guilt that keeps piling and piling as missing assignment notifications bombard my phone. Sit there as my peers get awards, leadership opportunities, and scholarships. Sit there evaluating my choices in the past and every single failure, afraid to do something about it because I will just fail again or what even is the point this far into my high school career. 
I don't know how to get back up and I have limited time. I need to score well on the ACT i need to at least maintain my GPA so that I can get into a good university. But I'm unmotivated and every second I spend feels like a second wasted studying but I can't help it and I'm barely moving through. 

Please help me