Why is my evergreen shrub dying and how can I revive it?

Your evergreen shrub may be dying due to factors such as inadequate watering, poor soil quality, pests, or disease. To revive it, ensure it is receiving the right amount of water, sunlight, and nutrients. Prune any dead or diseased branches, improve the soil quality, and treat any pests or diseases present. Regular maintenance and care will help revive your evergreen shrub.