Please oh please pray for me

My voice is still taking a vacation in Phuket and has left me speechless. Jac insists that I sound like Ronald Weasley and gets entertained by me saying, "Bloody Hell!" I guess that's the only good thing that came out of this sore throat. I'm pretty entertained by my voice too, if not for the upcoming christmas choir and youth camp.
DOUBTS. I really wanna minister to others, but somehow I am not filled with the Spirit. How can I minister to others when I, myself am not able to listen and follow instructions from the Holy Spirit? I fear that whatever I say will sound shallow and meaningless to others. Why am I not filled???
Perhaps it's not that I am not filled, it's because I have to many things on my mind that I am deaf to the Spirit's calling. Like what?? I've got tuition stuff to prepare, which I must do by at least Thursday. My throat is still very bad, how to lead my group like that??! (and the camp is on Friday.) Worried that I cannot minister well enough to my group members because I'm so unsure if it's the Spirit leading or my own human wisdom. 2 other personal issues annnnd my results for this sem are coming out soon! This week or the next. Didn't fare very well this semester, was pretty careless during the exams. I feel like I have done some kind of injustice to myself if I get bad grades. Getting bad grades, will affect alot of things. E.g.: The honours, the exchange programme, my career and the list goes on... No need to elaborate.
I feel helpless. There's only so much I can do and why do I even feel more stressed than during the exams??! It's odd. The only thing I can do now is to commit every single thing to God and pray that He will have grace and mercy on me. Please pray for me. Arghhh. 疯了。