This suit, most often named Coins or Pentacles, is a symbol for a magical talisman that represented wealth or potential. This suit represents something supportive that is available to you -- whether it be health, some kind of talent, a material or financial resource.
A Four in this suit has been used to express the paradoxical aspect of material security -- the two-edged sword of having been well supported and protected. It sounds completely idyllic until one investigates the real demands that prosperity places upon people -- the pressure of big decisions, responsibilities toward dependents or employees, and even tougher decisions in times of insecurity.
An immature person thrust into such a position would lack the perspective to sensibly assess risks and rewards, would be vulnerable to bad advice or surprise developments, and could even put the livelihoods of loyal assistants at risk. This card also can refer to the subtler dependencies that comfort encourages, allowing laxness and self-indulgence to quietly degrade one's reserve of will.