“Say, ‘This misery that I am suffering is of my own doing, and that very thing proves that it will have to be undone by me alone.’ That which I created, I can demolish; that which is created by someone else, I shall never be able to destroy. Therefore, stand up, be bold, be strong. Take the whole responsibility on your own shoulders, and know that you are the creators of your own destiny. All the strength and success you want is within ourselves.”

Socrates speaking to Alcibiades
Alcibiades I

Coming Out Speech (2014)

letter to his friend Martín Zapater https://www.wikidata.org/wiki/Q3915977 and https://nl.wikipedia.org/wiki/Bestand:Francisco_de_Goya_-_Portrait_of_Mart%C3%ADn_Zapater_-_Google_Art_Project.jpg, March 1793; from: 'Francisco de Goya. MS Letters to Martín Zapater 1774-99', Collection of Prado - published as Cartas a Martín Zapater; ed, X. de Salas & M. Agueda, Madrid 1982, p. 211; as quoted by Robert Hughes, in: Goya. Borzoi Book - Alfred Knopf, New York, 2003, p. 127
Goya started to become deaf then, had fainting fits and spells of semi-blindness. From 1793 onward [he was 46] he became functionally deaf, till his death
1790s

Delusion for a Dragon Slayer (1966)
Context: "Heaven is what you mix all the days of your life, but you call it dreams. You have one chance to buy your Heaven with all the intents and ethics of your life. That is why everyone considers Heaven such a lovely place. Because it is dreams, special dreams, in which you exist. What you have to do is live up to them."
"I—" started Griffin, but the wizard cut him off with a blink.
"No, listen, please, because after this, all the magic stops, and you have to do it alone.
“You create your own Heaven, and you have the opportunity to live in it, but you have to do it on your own terms, the highest terms of which you are capable. So sail this ship through the straits, navigate the shoals, find the island, overcome the foam-devil that guards the girl, win her love, and you’ve played the game on your own terms."

1920s, Truth is a Pathless Land (1929)
Context: Your prejudices, your fears, your authorities, your churches new and old – all these, I maintain, are a barrier to understanding. I cannot make myself clearer than this. I do not want you to agree with me, I do not want you to follow me, I want you to understand what I am saying. “This understanding is necessary because your belief has not transformed you but only complicated you, and because you are not willing to face things as they are. You want to have your own gods – new gods instead of the old, new religions instead of the old, new forms instead of the old – all equally valueless, all barriers, all limitations, all crutches. Instead of old spiritual distinctions you have new spiritual distinctions, instead of old worships you have new worships. You are all depending for your spirituality on someone else, for your happiness on someone else, for your enlightenment on someone else; and although you have been preparing for me for eighteen years, when I say all these things are unnecessary, when I say that you must put them all away and look within yourselves for the enlightenment, for the glory, for the purification, and for the incorruptibility of the self, not one of you is willing to do it. There may be a few, but very, very few. So why have an organization?

Source: The Diary of Anais Nin Volume 1 1931-1934: Vol. 1

Fernbank, London, England October, 1971
1970s
Variant: If you want external happiness, it can be an elusive desire. Internal happiness needs only to be revealed. It is not elusive because it is within you. It is your treasure. If you take someone else's treasure, it is stealing, but if you turn to your own, it is not. Happiness is your own treasure because it lies within you.