Getting enough sleep is important, for example, because this is the tirne when skin works especially hard at repairing itself Lack of it leaves skin looking dull, you're suffering from insomnia, the chances are that stress is a significant factor. Whereas happiness makes skin giow, stress makes skin show the worst side of its nature. Spots, pimples, eczema. blotches and flakiness: these are just some of the stress symptoms you may see in your skin