as a yoga teacher-in-training, i would have to tell you meditation. to take time with yourself and become one with the Universe. meditation refers to the practice of stillness of the body and the mind. this can be sitting quietly and focusing on the flame of a candle (and releasing stress) or just breathing.
as a teacher, i would tell you to plan. get a planner. i recently got a passion planner and it has a bunch of resources on how to plan, they even have free calendars on their site available for download!
once you have figured out how you want to tribute to the greater good of our society, you have to have a plan. ask the Universe for guidance. allow yourself to be guided so that you can complete your task.