Food affects the mind. For the practice of any kind of yoga, vegetarianism is absolutely necessary since it makes the mind more pure and harmonious.

Your true nature is that of infinite spirit. The feeling of limitation is the work of the mind.

Sense-perceptions can only be indirect knowledge, and not direct knowledge. Only one's own awareness is direct knowledge.

The thing to do is to concentrate on the seer and not on the seen, not on the objects, but on the Light which reveals them.

What comes will also go. What always is will alone remain.

...Bliss is not something to be got. On the other hand you are always Bliss. This desire [for Bliss] is born of the sense of incompleteness. To whom is this sense of incompleteness? Enquire. In deep sleep you were blissful. Now you are not so. What has interposed between that Bliss and this non-bliss? It is the ego. Seek its source and find you are Bliss.

You need not aspire for or get any new state. Get rid of your present thoughts, that is all.