At the end of the day, all you can hope for is to go on. The older I get, the more I realize that just keeping on keeping on is what life's all about.

This quote means that as we get older, we start to understand more and more that continuing to keep striving and working hard is the most important part of life. At the end of each day, when you look back on what you have done, the only thing you can really do is accept it and continue to try your best. Trying your best and continuing on no matter what is essential to living a fulfilled life.