Just as the human body need exercise, so does the mind. When you begin to meditate and make a conscious decision to get focused on a particular topic; to reach an intended end, then you are practicing the very thing I have been pointing to.
The human mind is a extraordinary creation from GOD. Take that mind and use it by "Thinking" of things that you desire and watching it come to pass. Watch it manifest in real time, right in front of you. Practicing these thing only bring you closer to your goal. Sometimes you may encounter challenges in the process but never-the-less you will see positive results.
Exercise your mind... Its a great place to start to building your dreams.