Remember, you can always save up to retake the course/test again. Also, you can always try something else, either a different course or some other line of work entirely.
I am puzzled though, as to why you have been taking a course that you don't sound really enthused about. Wouldn't it make more sense to study stuff you are really interested in? After all, wouldn't you rather get trained to work at something you like and are really interested in?
Well, any way, good luck!
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau