If the cause of your stress is something over which you have no control, you need to evaluate the problem, face it and seek help. There are many different counseling methods that incorporate behavior techniques to address stress. Medication can be useful in some situations, but tranquilizes should never be a long term “cure” for stress.
Natural cures for stress include behavior management techniques, proper diet and exercise, herbal remedies and yoga techniques. These will actually work towards alleviating your stress.