The Seven of Pentacles is aligned with Saturn in Taurus and is also known as the Lord of Success Unfulfilled. It represents sustained effort, concentration and commitment to growth.
Saturn represents blocks, delays, and reward for much hard work while Taurus represents enjoyment of material rewards, so this card means there will be just rewards, but only after much work and patience.
There is a sense of frustration with this card, since one feels that one has been making a concerted effort to produce and succeed, and yet the result is less than pleasing or promising. It is like hitting one's head against a brick wall - so much effort to so little effect.
The Sevens, like the Fives, refer to conflict and resistance - the Five's conflict is internal while the Seven's conflict is external. So outside forces seem to be at odds with your material and creative endeavours.
Often this card brings with it a difficult decision that must be made in relation to work or finances - you know what must be done, circumstances are requiring you to make your choice and yet you are reluctant to make such a final decision which threatens to destroy everything you have built up so far.
You might view this card in the context of the Farmer - he prepares the soil, he weeds, feeds and tills it in preparation for the seed which, with the gentle rain and smiling face of the Sun in its season will result in the well-earned fruits of abundance.
Much of the delays in your gratification relate to fear and resistance - do you really believe and expect to be successful or are you just going tthrough the motions while vaguely thinking you are doing enough?
Time to get out of your own way, relax and allow your good to come in its own time and it will.
Image from "Druidcraft Tarot" © Stephanie Carr-Gomm, Philip Carr-Gomm, and Will Worthington