Why is homework so stressful? And why do I let it get to me?

Today's inspiration-- MUSIC :)
One of my old faves by Sandi Patty- God Is Walking Me Through

Because God was holding my hand, I was able to get through this day all in one piece. This dumb Revit program is so dadgum frustrating I can hardly stand it. I didn't work as hard as I have to only have a horrible grade in the end. I know God is going to take care of this problem, it's just got me really worked up. Please God, Please! Help me! I need strength and a level head so I can get through this. I know it seems like such a little thing, but please help me. I feel like I have such a full plate right now. I need you to take the weight from me and make it yours. Give me the strength to let go of it and let you have it. I'm not very good at that.
I'm really gonna' need you tomorrow. I already know it and the day hasn't even started yet. That's a sad thought, isn't it? :/
It's going to be a long day and I'm really going to struggle getting through it. Please prove what I think to be wrong and make it the best day ever. And help me to rest peacefully so that I can function on a somewhat consistent level.
I played Sandi Patty's song over and over last night while I was working on homework and then again this morning while I was showering. I was in a great mood and then I started working on homework. Then I got stressed over stuff that ultimately isn't going to matter in the grand scheme of things. I guess I just needed to be brought back to my center. Listening to Christian music is an easy way for me to get my mindset back to where it should be. I've also been praying a lot. I've really been trying to stay in constant contact with God throughout the day. Our constant connection is what keeps me going.
I guess I just need to take a step back and realize that it's not the end of the world.
I need to take a moment to just breathe.

"You are my oxygen. I breathe you in, I breathe you out. You are my oxygen, you are my love, you are why life survives." -Avalon, Oxygen

Note to self: When it becomes hard to breathe, breathe in God.