God is good all the time and all the time God is good

God is good all the time and all the time God is good. I'm sure you all have heard this saying before and yes it is true even if things don't go your way. I studied for a test that I had recently and I put in so much time studying. I never studied so much in my life and I was expecting to get a B but instead I got a D. I was so pissed off because I put so much time but yet received such a bad grade. WHY???? I was confident that God was going to help and it clearly seems he didn't. I was pissed off but then I recognized that everything happens for a reason. I guess I need to study harder or find another strategy because obviously the one I have isn't working that well. Here's my point. It could be alot worse than it is. I have rotations at the hospitals and I see so many sick people who can do barely anything for themselves. I have the ability to breath, to walk, to use my fingers, to praise him with my mouth. No matter what happens, good or bad, we have to give God all the glory and praise. As for my grade? It sucks but I have three more exams and I need to study harder.