Challenges

I have very late working hours where I work. Sometimes I begin to wonder whether i can really do my studies with this type of work.
Every day when i get home i am exhausted. and too tired to do anything besides fall on my bed and sleep.
But when i think about it, i don't want to give up my job because of the exposure and experience it provides me. But then again i think that i can just get a good job after i do my studies..
So i'm stuck in between the decision of what to do. Staying at home and doing only studies to maintain my gpa or taking the challenge to try and maintain it while working.
But when i think about it, I guess that challenges should always be taken.. no matter what we do.. So i have decided to try to do it.. somehow...
And to ignore all those ppl who tell me that i can't do it...
Because at work.. i'm not only learning about the industry... but also about ppl.. and how they can change and be selfish.
I need to learn this someday. Better sooner than later..
I hope i do this well.. And i hope that 2 months from now, i put up a post saying that I got wonderful midterm exam results. While doing my studies.