The reason succulent leaves shrivel and wilt is because of watering too lightly, not watering often enough or due to soil baking hard and repelling water off the surface, causing drought stress. Succulents store water in their leaves which shrivel when the roots cannot access enough moisture.
Simply so, how do you revive dried succulents?
Water your succulent with a watering can deeply as soon as you notice any dry, crinkly leaves. You should keep going until water runs out of the drainage holes to ensure your succulent gets a good enough soak. Make sure that the soil dries out before you water your succulent again.