wrist problem. It hurts

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I am a college student and being a college student is much of a work that takes most of my time, but what bothers me most aside from school problems is my left wrist. It hurts when i bend it. I can use it in light situations. But it really annoys me when i cant do things that i usually do like playing guitar. The force of my left hand is lessen. I am massaging it on my own and find that somewhat a relief but that was just temporary. I am afraid to in to doctor. What can you suggest as good home remedies for my wrist? Thanks.