Difficulties are opportunities to better things; they are stepping-stones to greater experience...When one door closes, another always opens; as a natural law it has to, to balance.--Bryan Adams 

Each experience through which we pass operates ultimately for our good. This is a correct attitude to adopt and we must be able to see it in that light.--Raymond Holliwell

Education is when you read the fine print. Experience is what you get if you don't.--Pete Seeger

Some things cannot be taught; they must be experienced. You never learn the most valuable lessons in life until you go through your own journey.' – Roy T. Bennett