You are the creator of your world. Your creator of yourself. You create your experiences and your world. Thoughts are your tools. Postive, uplifting thoughts create a beautiful world for you while negative thoughts create a depressing world for you. You can create heaven or hell through your thoughts.
You can use your thoughts to become anything you want. By constant meditation on "I am Brahman", I am one with the Divine, you will attain unity with the "One without the Second - Brahman"