The Eight of Disks
The Lord of Prudence is not quite as austere a card as it first sounds. It's another of those Disks that works on more than one level. In the purely material and mundane sphere it indicates a period where financial resources must be carefully managed.
So long as it does not appear with cards like the Ten of Swords or the Five of Disks, there will not normally be any grave material problem. But there is a warning here that there may be unexpected expense, and good money management will enable us to fund whatever arises.
At the next level, the Eight of Disks can apply to a period where you enter into additional training in order to enhance your career projects. In this case look for cards like the Three of Disks, or the Ace, to indicate some new area of study. Then look for cards like the Universe, or the Sun to indicate the successful outcome of your efforts.
Finally in the spiritual area, when the Lord of Prudence comes up with cards like the Priestess, Death, the Moon, or the Hierophant, you're approaching a period of rapid spiritual development - almost an initiation. In this case, this card is warning you to be alert for opportunities, ready to deal with stress and pressure, and to manage your energies thoughtfully and carefully. You can perhaps see the correlation which exists with regard to energy management between the material and spiritual definitions of the card - in either case energy must be regulated and respected in order for life to go smoothly and for you to get the best out of your experiences.