This dream is about transformation. Since we're all in the process of psychic transformation all the time, it's not surprising that it shows up regularly in our dreams.
The Dream: I am taking cooking oil to a recycle center that utilizes only food waste. To get to the center I have to walk down into a gulley, its slope covered with the kind of loose rocks used to control weeds and erosion. Once I get down, a helpful and friendly—in a professional way--man directs us to the proper drop off site. I take the oil to an underpass and see that it is recycled into beautiful carved kitchen cabinet doors. I am very impressed with this operation and plan to come again.
In another area waste is recycled into jewels. This work is so interesting to me that I would like to be a part of it. I hope to be hired. The man in charge of the jewels is leaving; as they look for a replacement for him I hope I will be considered for the post, but I think that is unlikely since I have no experience. However, his assistant is promoted and I am taken on to learn the craft.
Interpretation: In mythology oil is a gift fit for the gods. The used, depleted oils in this dream (my feelings about my own potential) are transformed into ornamental cabinet doors. These in turn protect the treasures of the kitchen (an area where ingredients are transformed into something that sustains us). There's something circular here: the oil goes from kitchen waste to a beautiful and useful part of the kitchen. But to turn this particular dross into gold I must first climb down the sides of the gulley covered with loose rocks. The dream tells me that I am feeling used up, wasted—but that if I can negotiate the slippery slope, where I might literally lose my footing, I will get to a place (my center) where I might become energized for the better.
The second paragraph of the dream reiterates the same theme, this time upping the ante by changing waste into jewels.