Thanks for writing to health care magic!
After reading your question it is evident that you have tremors in hand, especially when you try to hold something.
Had I been at your place I would go for an MRI
brain, blood counts to see if there is anything else.
you have not told about the duration of the problem but I don't think it is from childhood, which rules out essential tremors. nor have you mentioned anything about any parents having this symptoms.
It is something related to CNS system, but one cannot pinpoint without investigations.
I would advice you to visit a neurologist
without much delay to nip the problem in the bud.
Hope this answer helps you in getting better
Feel free to ask more.