The dark soil. The kind you can see the richness of without even touching it. And when you do touch it, you can feel its potential. Imagine the years it took to get its composition. Whatever is planted in it would surely thrive.
Then there is the other soil. It is not perfect, but it is not bad either. It can be conditioned to maximize its potential. What you put into it will determine what you get out of it. It will take some work, but you can plant in it and still get good results.
Your mind is like the soil. Most of us are not born with the super-rich mixture, but what we do have is still good. We can condition it and add nutrients to it. And the more wholesome the nutrients, the higher the quality our minds become. You will be able to plant almost anything in it. Once it is planted, keep watering it. Give it plenty of sunshine and air. If those tender shoots start to wilt, fertilize it with some emotion. You are the farmer. It is your job to bring that seedling of hope into a fruitful reality.

Whatever we plant in our subconscious mind and nourish with repetition and emotion will one day become reality.
Earl Nightingale