“Confine yourself to the present.”

Source: Basic Writings: Martin Heidegger

https://naijagists.com/omotola-jalade-ekeinde-wisdom-quotes-top-20-motivational-quotes-sayings-omosexy/ Omotola Jalade Ekehinde speaking on Success.

Source: Today I Will: A Year of Quotes, Notes, and Promises to Myself

Source: Life, the Truth, and Being Free (2010), p. 110

Source: Autobiography of Mark Twain, Volume 1 (2010), p. 16

Source: Liber Kaos (1992), p. 87
Context: The Conscious mind is a maelstrom of fleeting thoughts, images, sensations, feelings, conflicting desires, and doubts; barely able to confine its attention to a single clear objective for a microsecond before secondary thoughts begin to adulterate it and provoke yet further trains of mental discourse. If you do not believe this, then attempt to confine your conscious attention to the dot at the end of this sentence without involving yourself in any other form of thinking, including thinking about the dot.

"The Tomb" - Written Jun 1917; first published in The Vagrant, No. 14 (March 1922)<!-- p. 50-64 -->
Fiction
Context: In relating the circumstances which have led to my confinement within this refuge for the demented, I am aware that my present position will create a natural doubt of the authenticity of my narrative. It is an unfortunate fact that the bulk of humanity is too limited in its mental vision to weigh with patience and intelligence those isolated phenomena, seen and felt only by a psychologically sensitive few, which lie outside its common experience. Men of broader intellect know that there is no sharp distinction betwixt the real and the unreal; that all things appear as they do only by virtue of the delicate individual physical and mental media through which we are made conscious of them; but the prosaic materialism of the majority condemns as madness the flashes of super-sight which penetrate the common veil of obvious empiricism.

Bk. 2, Ch. 4
Confessions of Felix Krull, Confidence Man (1954)