The most important day in my life

Today's the 31st of August and I've promised myself that I'll finalize my decision on what course I'll be taking by this month. Well, of course this is the decision which will affect the rest of my life. I've planned to take up medicine in IMU. Hopefully I'll be able to get into that university and if I can't, I seriously don't know what I should take up anymore. I'm really tired of having to decide what I want to do. Of course I'm stressed out. Millions of questions kept flowing in and out of my mind unanswered. What if I'm not able to get into IMU? What if my results aren't good enough to get me into that course? Will I be able to pass those examinations awaiting me when I'm in that course? Am I actually capable of taking up the responsibilities and duties which I have to carry on my shoulders in the future? and etc...

I really hope that this is the best decision for me. God, please lead me. Lead me through because that is what I want to do right now. I hope everything goes smooth..Most importantly, guide me through.