“One resolution I have made, and try always to keep, is this: ‘To rise above little things’.”

Augustus William Hare and Julius Charles Hare Guesses at Truth (London: Macmillan, ([1827-48] 1867) p. 526.
Misattributed

K 39
Variant translation: Before we blame we should first see whether we cannot excuse.
Aphorisms (1765-1799), Notebook K (1789-1793)

I Like It, I Love It
Song lyrics, All I Want (1995)

"Philip of Pokanoket : An Indian Memoir".
A more extensive statement not found as such in this work is attributed to Irving in Elbert Hubbard's Scrap Book (1923) edited by Roycroft Shop:
The Sketch Book of Geoffrey Crayon (1819–1820)
Variant: Little minds are tamed and subdued by misfortune; but great minds rise above it.

Anathemas and Admirations (1987)

Letter to Isham Reavis (5 November 1855)
1850s
Context: If you are resolutely determined to make a lawyer of yourself, the thing is more than half done already. It is but a small matter whether you read with anyone or not. I did not read with anyone. Get the books, and read and study them till you understand them in their principal features; and that is the main thing. It is of no consequence to be in a large town while you are reading. I read at New Salem, which never had three hundred people living in it. The books, and your capacity for understanding them, are just the same in all places.... Always bear in mind that your own resolution to succeed, is more important than any other one thing.

Source: Not a Penny More, Not a Penny Less

My Twisted World (2014), 19-22, UC Santa Barbara, Perspective on incelness