“What makes earth feel like Hell is our expectation that it should feel like Heaven.”

Lalla Rookh http://www.columbia.edu/itc/mealac/pritchett/00generallinks/lallarookh/index.html (1817), Part V-VIII: The Fire-Worshippers

Source: The Bell Jar

The Waiting
Lyrics, Hard Promises (1981)

Source: Pictures from an Institution (1954) [novel], Chapter 1, p. 28

Source: The Da Vinci Code

Source: The Tent

"Little Things" (1845) as quoted in Our Woman Workers: Biographical Sketches of Women Eminent in the Universalist Church for Literary, Philanthropic and Christian Work (1881) by E. R. Hanson. These were the final words of the poem in the original publication, but later versions published anonymously by other authors appended various additions to this. It has also often appeared credited to Carney in a variant form:
Little deeds of kindness,
Little words of love,
Help to make earth happy
Like the heaven above.

Source: The Charioteer (1953), p. 285
Context: You mustn't get so upset about what you feel, Spud. No one's a hundred per cent consistent all the time. We might like to be. We can plan our lives along certain lines. But you know, there's no future in screwing down all the pressure valves and smashing in the gauge. You can do it for a bit and then something goes. Sometimes it gets so that the only thing is just to say, 'That's what I'd like to feel twenty-four hours a day; but, the hell with it, this is how I feel now.