Logging long hours to get ahead? By organizing your workday more strategically, you may be able to further your career without sacrificing your personal life.

Nearly two in three full-time U.S. employees say their workloads have increased in the past 12 to 24 months, according to a recent survey from Accenture Ltd., a global management-consulting company. Of these, almost half say the heavier burden has negatively affected their personal life, the survey shows.

"You have a finite amount of energy and talent to provide, and you need to protect it," says Karlin Sloan, chief executive of Karlin Sloan & Co., ...