Self-discipline has a bigger ...

Self-discipline has a bigger effect on academic performance than does intellectual talent.
Self-discipline has a bigger effect on academic performance than does intellectual talent.
 Charles Duhigg

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

Since the 17th century, insurance agents have been the foremost experts on risk.
 Charles Duhigg
The brain has this amazing ability to find happiness even when the memories of it are gone.
 Charles Duhigg
There’s something really powerful about groups and shared experiences. People might be skeptical about their ability to change if they’re by themselves, but a group will convince them to suspend disbelief. A community creates belief.
 Charles Duhigg
However, to modify a habit, you must decide to change it. You must consiously accept the hard work of identifying the cues and rewards that drive the habits' routines, and find alternatives. You must know you have control and be self-conscious enough to use it -- and every chapter in this book is devoted to illustrating a different aspect of why that control is real.
 Charles Duhigg
If you dress a new something in old habits, it’s easier for the public to accept it.
 Charles Duhigg