Help yourself out.” But if, and when, you can: Try to avoid multitasking. “It's useful not to confuse multitasking with having multiple commitments, projects or roles to fulfill,” says Marshall.

If you're "multitasking," you can't devote your best effort to any task. "I know there's people that say multitask, multitask," she said in a recent interview with Business Insider. "I found that ...