Quote by Sheryl Sandberg
"I've learned that gratitude is the most underrated tool for happiness."
More from Sheryl Sandberg
"We cannot change what we are not aware of, and once we are aware, we cannot help but change."
"A truly equal world would be one where women ran half our countries and companies and men ran half our homes."
"Don't aspire to make a living, aspire to make a difference."
"The ability to adapt to change is the most important skill an employee can have."