This is considered a card of luck and good fortune. Thus, the 4 of Diamond are inherently protected, but only if they are making diligent and concentrated efforts in their lives. When this is lacking, poverty and failure - in varying degrees - are the sure results. A life of leisure is just not part of their life plan!
Karmic Challenge for the Four of Diamond: Discontentment and Dissatisfaction
The importance of work is stressed for all 4's, and this is especially true of the 4 of Diamond. There is a tendency to become dissatisfied with their careers, and they will either move from one job to the next, or stay in a menial position, stuck and frustrated with their lot in life.
On a personal level, those who know a 4 of Diamond will agree: this is by no means an easy card to deal with. They can be very defensive and stubborn. They are known to rebel at the restrictions imposed by relationships, work and life circumstances. On the other hand, when a Four of Diamond person choses to switch on the charm, resistance is futile!
Basically materially oriented people, there is an underlying spiritual interest which should not be neglected! They are also extremely intuitive.