Goals should be realistic. Period. Unrealistic goals cannot be achieved. You can never have the dedication to pursue goals that are hard to achieve. For instance, if you’re given a target to increase productivity by 100 percent, it means you may have to work 10x harder than what you’re doing now. Such a target is highly unrealistic. It’ll be more practical to set an incremental target of 15-20 percent increase in productivity and work persistently to achieve the target. Unspecific or unrealistic goals are usually confusing and decrease the commitment level. Chasing impossible goals not only wastes time and energy, but also brings down morale.