The Impediment to enter the college life

I always ponder on what course to take up. My future lies on what decision I will be making.  I cannot  just simply pick a course because I like it, I also have to look at some factors; my abilities, my personality, the pros and cons, and of course where I think I can excel at the same time be happy.

Will I take up Medicine? or Tourism Management? these two courses are really in different fields but these courses is my dilemma.

I wanna be a surgeon, I know these hands of mine can save lives and I wanna use my profession to save other people's lives. On the other hand, I also want to take up tourism management, my dream of having or owning an Airline and Hotels, and to be a pilot can be possible if I'll take up Tourism Management, this is a step for a dream fulfillment. What hinders me to take up medicine is the fact that I am not a studious and nerdy type of person. I have no patience, long years of studying might just kill me (but I hope not) but I really want to take up medicine. 

I still need more time to think and I'm not sure if 5 months is enough.