Neville Goddard Audio Lecture: Mental Diets (1955)

About This Lecture

In this 1955 talk Neville borrows the idea of a mental diet — a notion he shares with the New Thought teacher Emmet Fox — to make a single practical point: the unceasing inner conversations we hold are the unrecognized causes of the conditions of our lives. Most people, he says, are entirely unaware that they are constantly talking to themselves, silently rehearsing grievances, defending themselves against absent critics, and arguing old quarrels, and that these inner dialogues are quietly shaping their experience. The first discovery the listener is asked to make is simply that the inner conversation is going on at all — for one cannot diet on food one does not know one is eating.

Neville frames speech as the image of mind. Outer words and circumstances are reflections of the inner talking that precedes them; the world is, in effect, the visible record of conversations already held within. Putting yourself on a strict mental diet therefore means refusing to entertain any inner conversation that contradicts the life you desire, just as a physical diet refuses certain foods however habitual or appealing. Whenever the mind drifts into talk that affirms lack, resentment, fear, or limitation, you deliberately interrupt it and replace it with conversation that implies the wish already fulfilled — the kind of talk you would naturally engage in if the desired state were already a fact.

He grounds the discipline in scripture's startling claim that we will give account for every idle word, and that a man is justified or condemned by his words. Neville reads this not as a threat of future judgment but as a present law: the words we speak within, idle or deliberate, are seeds that produce after their kind. "As a man thinketh in his heart, so is he" is, for him, a precise description of cause and effect rather than a piece of moral advice. The inner speech we tolerate becomes the assumption we live by, and the assumption we live by becomes the world we meet.

Because the lecture is short and practical, its value lies in the discipline it prescribes rather than in elaborate theory. Neville urges the listener to monitor the tone and direction of their interior dialogue throughout an ordinary day, conducting only those inner conversations they would be willing to see embodied in fact. The diet is strict precisely because a single indulged conversation of lack can undo hours of constructive imagining, as a forbidden meal undoes a fast. He counsels gentle persistence: when you catch yourself in a contrary inner talk, you do not despair but simply revise it, returning the conversation to the note of fulfillment. Sustained over days and weeks, this control of inner speech reprograms the assumptions one lives by, so that the world gradually conforms to the conversations one has chosen to keep — and the listener discovers that the long-overlooked habit of self-talk is in fact the most powerful creative instrument they possess.

Key Scripture

Neville grounds this lecture in Matthew 12:36-37, Proverbs 23:7, James 3:2-6.