Isn’t quitting like that a tad selfish when you’ve got so much to offer, like getting four A stars at A level and then not going on to uni; or taking early retirement from work so you can doss about on the golf course. But then grinding on until the bitter end doesn’t sound much fun either - so which is best?

@james85 sometimes quoting is the best thing, for example if your in a casino and you have a good pay out, you can either take that money or you can gamble it away. Someone once said its better to burn out than fade away.
I guess it depends on the situation.
Sometimes it's better to quit while your ahead!