All in all, the effective executive tries to be himself; he does not pretend to be someone else. He looks at his own performance and at his own results and tries to discern a pattern. ‘What are the things,’ he asks, ‘that I seem to be able to do with relative ease, while they come rather hard to other people?’
The Author of this Quote

Author
Peter F. Drucker
Management consultant, educator, author, and "the founder of modern management".