The ideal is such that one can go to extremes, but as they say in Sanskrit, extremes in all things are undesirable. Yet at the same time it is not generally so; mostly one does not consider the ideal enough. For instance one cannot be too good and one cannot be too true. The way to practice this is in one's everyday life; if one would only keep in mind that what one has said one must do, even if it is a very small thing.