Hot fomentation. Gentle Stretching of Hand Muscles. Ball exercises. Wrist Exerciser.

Hi I understand your concern and anxiety... possible causes may be underlying anxiety disorder, thyroid disorders,sleep disorders,intentional tremors,certain medications ,cerebellar disorders etc...fallow relaxation techniques like yoga, meditation,avoid alcohol, smoking, coffee, tea...have good sleep and develop healthy food habits..consult nearest neuro physician for clinical examination and evaluation they will do the needful.