When you imagine something what you are doing is projecting yourself into a potential future state and allowing yourself to experience it as if it was real. When you project your consciousness into an imaginary space you are familiarizing yourself with what it's like to occupy that state. Dwelling on and residing in that space is the path to making it real in the exact same way one would imagine a painting they'd like to create. Occupying the place you want to be inside your mind is the precursory stage for it becoming real. If you want to be in a state different than the one vou are now use your imagination. There's no limit to where it can take you.