“By giving yourself less time, you'll work faster, concentrate more intensely, and perform at peak efficiency.” — Mani S. Sivasubramanian Copy Share Image
“The ability to concentrate intensely is a skill that must be trained. This idea might sound obvious once it’s pointed out, but… — Cal Newport Copy Share Image
To concentrate intensely for 4 and a half hours, that's too hard for me. Too tiring. I concentrate 'lo maximo' on the… — Sergio Garcia Copy Share Image
