Diet is a matter of personal preference, but if you're interested in the advanced states of meditation, eating mammals should be avoided. They have a more evolved consciousness and can affect your attention field greatly.
Frederick LenzFocus on an object of some type, hopefully an object that's beautiful or powerful. You could find a pretty colored stone that you just feel good about.
Frederick LenzThis light unglues the formation and structure of the being for a certain period of time. It will reassemble automatically.
Frederick LenzPractice meditating on the heart chakra. This is only one of them, but it's quite good for the first few years of your meditative practice.
Frederick Lenz