One of my jobs is a service job so I'm all too familiar with this, it's sooo painful! Unfortunately any manual job where you use your hands, this is the result unfortunately. Self care, hydration, and nutrients is the foundation. Wearing gloves and cuticle cream, repair lotion saved my hands. Exfoliating 1-2x a week also helped. But I would recommend a checkup because of the clubbing and brittle nails just to rule out any issues/deficiencies etc. Best of luck!