Keep Going Quotes

"Anytime you suffer a setback or disappointment, put your head down and plow ahead." "Persistence has summed up my whole career. It’s summed up my whole life. Just keep going. Just keep moving forward. No matter what obstacle comes in your way, just keep moving forward" "You can always quit, so why quit now." "Run when you can, walk if you have to, crawl if you must; just never give up"