When you love to do something, that means you have a gift for it. And when you are gifted at something, you have to do it. You don't have to quit your job and mortgage your house, but you do have to give your gift a careful look. If you don't pay attention to what you love, you could overlook your greatest gifts!
Ultimately, I think gardening speaks to a deep-seated desire to experience the real, the essential, the astonishingly possible. To garden is gradually to give up control, to fall literally to one's knees and come into closer and closer contact with the tremendous and often bewildering beauty of the world. Nothing, you find, is at all what you thought it was. Dirt is not dirt, but a teeming mass of microorganisms that turns death back into life.