Why do I suddenly have trouble holding small objects?

Unclear. How old are you? Do you have other symptoms or fine motor difficulties? Any gross motor difficulties? Are you anxious? Is there weakness in your hand? One hand more than the other? Anything make it worse or better? Could be neurological, anxiety, muscular. Are you older and have a neurological condition? Do you have diabetes and peripheral neuropathy making it hard to feel objects?
Are you having. Bad tremor ? Do you have problem of sensation ? How is your vision ? Please see your pcp and have through history and physical . Good luck.