Perseverance means to do something continuously in spite of obstacles and the key to success in any field is the perseverance of a human being. Success in life doesn't come easily and there are many failures and hurdles that one has to clear before reaching the goal of achievement. I think that almost every successful person begins with two beliefs: the future can be better than the present, and I have the power to make it so. And if you keep persevering long enough, you will achieve your true potential.