You must have a mission statement in life. Everyone must have one. Imagine a company, an organization or an institution without one.
This is simply a set of guiding principles which clearly state where you are going and where you want to be at the end of your life.
A mission statement embodies your values. It is your personal lighthouse keeping you steadily on the course of your dreams. Over a period of one month, set a few hours aside to write down five or ten principles which will govern your life and which will keep you focused at all times.
Examples might be to consistently serve others, to be a considerate citizen, to become highly wealthy or to serve as a powerful leader. Whatever the mission statement of your life, refine it and review it regularly. Then when something adverse happens or someone tries to pull you off course, you quickly and precisely return to your chosen path with the full knowledge that you are moving in the direction that you have selected.
Related Suggested Reading: Goals by Brian Tracy (Link to Amazon.com)
Personal Example: Many years back in 1996, I attended a seminar where the speaker quoted this example.
[Paraphrased] Mission Statement is like a flight path. As most of you would realise the flight path looks like a smooth curve. In reality however, this is just a guiding line. A whopping 90% of the time the pilot is trying to get the plane aligned to the flight path -must be before the auto-pilot days- thanks to the tail winds, head winds, side winds. He constantly adjusts his direction subtly but surely to stick to the path.
Imagine pilot flying out a plane JFK – Heathrow without a plan. Your life is similar. You need a mission and a plan. You may not always get it, but you would be the first to know if you have missed it and make course corrections.