I don't know who this is for. Maybe It's just me. But, I have two words: Calm down.
You're going to be ok. You don't have to be so hard on yourself. You don't have to take on the whole world. Everything will work out, and all things work together for good for those who love the Lord and are called according to his purpose.
It doesn't matter the circumstance. It can be a family issue or an upcoming test, just know it's going to be ok.