That is one of my favorite quotes by Gandhi. Change starts from within, it takes love, time, hard work, dedication, faith that all things are possible. Each one of us have great purpose in the world. LEAD BY EXAMPLE!
Everyone faces challenges. The only difference between the people who overcome those challenges and the people who wallow in self pity is what goes on between the ears. Strive to look at and think about things differently and your world will be a much happier place to inhabit.