'Toad', the famous character in Kenneth Grahame's The Wind in the Willows is in a very depressed state and his good friends Rat, Mole and Badger, are 'worried that he might do something silly'.First they nursed him. Then they encouraged him. Then they told him to pull himself together. Finally, Badger could stand it no longer. That admirable animal, though long on exhortation, was short on patience.'Now look here Toad, this can go on no longer', he said sternly. 'There is only one thing left