Focusing on specific thoughts during meditation will help to still your mind. Guided meditations can be found for every purpose. When your meditation has a specific intention, the energy you invest is more focused and directed toward a goal. Random energy needs a focus in order to be useful.
When you enter meditation with a specific purpose, your mind will be focused on that purpose, and it will help you control your chaotic thoughts. A blank mind is harder to achieve and maintain than a focused mind.
First learn to focus your mind, then you will learn to empty it. When your mind is empty, you are surrounded by infinite potential for creation.