Often in life we feel failed, depressed and incompetent sometimes. There are several challenges that a person faces on a daily basis in life on professional and personal fronts. Due to which we feel stressed and not willing to go ahead in life and giving up our aim but life is a relentless battle and we have to keep up with challenges awating for with lot of energy and positive attitude. Here are a few inspirational quotes by famous people which will pump you up with motivation and zeal to take any challenge today or anyday. The best preparation for tomorrow is doing your best today. ~~H. Jackson Brown, Jr. Put your heart, mind, and soul into even your smallest acts. This is the secret of success. ~~Swami Sivananda You must do the things you think you cannot do. ~~Eleanor Roosevelt Perfection is not attainable, but if we chase perfection we can catch excellence. ~~Vince Lombardi If opportunity doesn't knock, build a door. ~~Milton Berle It is during our darkest moments that we must focus to see the light. ~~Aristotle Onassis Change your thoughts and you change your world. ~~Norman Vincent Peale Also read: Know about Seema Rao who has trained around 15 thousand soldiers!! Pictures of 'Duplicate Products' created by China!! Unbelievable! Falcons have their own passports to board on Aircraft