Lost!!!

I have tried my best in my studies and manage my work at the same time.
But the result still... Of course not fail but not up to my expectation.
Maybe I am not the cut in Business course...
Lately, lack of motivation to do my assignment and I do have the idea to stop my studies.

Can't help feeling lost!!! As if I am stuck in the mud.
How long do I need to overcome this again...
For my work it took me 1 and half years to get over it but I don't have so much time to go through this...