Feng shui as seen through the eyes of most people consists largely of manipulating the tangible (physical) environment. Most of the time, we are looking at the layout of the land, buildings, the position of furniture, trees and roads, and also colors and shapes of things. Sometimes referred to as "Sying" energy, this physical practice is a very good way to make adjustments to an environment to support the chi of the people who live there. But it's not the only way.
There is a second aspect of feng shui that isn't as well-known but that is also a powerful way to change the chi of a person or a place. This energy is known as "Yi", which can be translated loosely as a wish, or an intention and/or an imposition of will. This type of energy might be accessed through a house blessing, through reading intentions daily, and by adjusting our inner feng shui to align with what we are desiring in life. It is the reason we like to look at a house's history and the way a person arrived at a place to see if there is a pattern of energy present there that needs to be considered. What intangible elements are impacting the space? This Yi energy is equally important as the physical aspects of the space.
By tying these two energies together, a level of success can be attained more easily than by using one or the other by itself. For example, it's great to read your intention every day to find a new relationship. It sets your mind on the purpose at hand. You might even meditate or pray on this desire which helps align your inner world with this intention. But to bring a turbo charge to this desire, you will also want to adjust your physical world by enhancing the relationship areas in your home, by getting out to meet people, and creating a nurturing environment around you. In this way, you are in essence "covering all the bases" to take you where you want to go.
Of course, life isn't predictable. There are no guarantees. By using feng shui methods, we are simply trying to increase our chances of attaining our goals by tapping into the best energy (chi) possible to take us there. All gardeners know that if you plant a seed, water it, use the best soil possible and have great weather that you have a very good chance of growing a wonderful vegetable or flower. On the other hand, perhaps at the height of harvest time, a deer jumps the fence and eats the whole thing. We're not in charge of the universe, but we do our best to live in it. That's a very important feng shui concept.