As you are the creator of your reality, it makes sense that you are the one who designs your future.
When you want something, you feel the excitement of it. You imagine and feel the emotion of having this dream. You get excited in the designing phase and imagine your life with this in it. Whether it is a person, a place or an object, the designing is the same.
As you spend time pondering and refining your dream, it grows and becomes more than when you first imagined, so that by the time it has manifested, it maybe so much better than you ever imagined.