"Having a steadfast purpose simplifies life. It defines what you do and what you don't do. It becomes the standard you use to evaluate which activities are essential and which aren't. Without purpose you've no real foundation on which to base your decisions, allocate your time, and use your resources. You tend to make choices based on circumstances, pressures, and your mood at the moment. When you don't know your purpose you try to do too much, and that causes stress and conflict. It's impossible to do everything people want you to do; you have just enough time to do God's will. If you can't get it all done, you're trying to do more than God intended. A steadfast purpose makes your lifestyle simpler and your schedule saner. And it leads to peace of mind: You will keep in perfect peace him whose mind is steadfast. (Isaiah 26:3)"
("The Word for You Today", Spring 2008, pg. 37)