Invoking Earth will help. You cannot overcome this, you cannot move past it, jump over it, and leave it behind. However, you can control it. You must work on void meditation, for it is strengthening your control of your mind and thoughts. If you begin to day dream, become active in an activity, such as reading, physical activity, or anything that will occupy your mind. Realize when you begin to day dream and immediately force yourself to occupy your mind with something.