The key to managing multiple projects is knowing Business outcomes of each, priority from a Business perspective and customer value focus. Next comes getting into the execution planning details to know where your projects may encounter roadblocks and be on lookout for triggers and removals of those blocks to ensure projects keep moving ahead per the plan. Managing priorities, time, delegating effectively to team members, ensuring a conducive, open and transparent environment in projects and collaborating closely with your Sponsors, stakeholders can greatly aid PM's in managing multiple challenging priority projects simultaneously.