“You must purge yourself before finding faults in others.
When you see a mistake in somebody else, try to find if you are making the same mistake.
This is the way to take judgment and to turn it into improvement.
Do not look at others' bodies with envy or with superiority.
All people are born with different constitutions. Never compare with others.
Each one's capacities are a function of his or her internal strength. Know your capacities and continually improve upon them.”
Source: Light on Life: The Yoga Journey to Wholeness, Inner Peace, and Ultimate Freedom, p. 60
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B.K.S. Iyengar 83
Indian yoga teacher and scholar 1918–2014Related quotes

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1980s

“Before you look for validation in others, try and find it in yourself”

“Learn from the mistakes of others. You can never live long enough to make them all yourself.”

The Notebooks of Leonardo da Vinci (1883), I Prolegomena and General Introduction to the Book on Painting

Variations of this quote have been attributed to a number of people, including Eleanor Roosevelt, Samuel Levenson, and Lao Tzu; there is no solid support for any such attribution.
Misattributed

“Learn from the mistakes of others. You can't live long enough to make them all yourself”
Cited as a piece of anonymous folk-wisdom from the 1940s onwards https://books.google.com/books?id=iNkWAQAAMAAJ&dq=%22Learn+from+the+mistakes+of+others.+You+can%27t+live+long+enough+to+make+them+all+yourself%22&focus=searchwithinvolume&q=%22make+them+all+yourself%22. Not attributed to Eleanor Roosevelt until 2001 https://books.google.com/books?id=ctxi36FCi18C&pg=PA151&dq=%22Learn+from+the+mistakes+of+others%22+%22live+long%22+roosevelt&hl=en&sa=X&ved=0ahUKEwiI_sD5mqDLAhWIKGMKHb8HAZ0Q6AEIHTAA#v=onepage&q=%22Learn%20from%20the%20mistakes%20of%20others%22%20%22live%20long%22%20roosevelt&f=false.
Disputed