So Help Me Lord

Today was just a freaking frustrating day. I couldn't find Joyce's composition book and I just feel so guilty that I lost her notebook. Then euro is so boring and so overwhelming. I have 7 worksheets to do and like 15 notecards, and I know if I really sit down and just get started I can finish but I have math homework and chem and english. I really want good grades but I'm slowly deteriorating and I'm crashing.. I have no more energy left to fight for my grades. My math grade is slipping and I don't even know how I'm letting that happen. I got an 87 on my test, which is okay, but I could have gotten a 97.. but I got minus TEN points because of TWO problems that asked which quadrant it was located in.. and what gets me even MORE mad is that I KNEW THE ANSWER! I just read it wrong.. and I have so much frustration and anger dwelling in me but the only peace I need is Jesus. I can't forget to see the reason why I live is for Him.. I just need to persevere and focus and especially in times like these will I be able to feel Him here, calming me down and helping me. Just typing this here is soothing my frustrations already so I really just ask Him for peace and joy and acceptance for whatever is to come my way.