You only lose if you quit! It may sound elementary, but I don’t know many winners who give up.
There will be times, quitting will appear to be the best choice. It is hard to find motivation to persevere, because giving up is so much easier. Keep going.
Its not about how long it takes, because the bigger the goal, there will be tests, and curves. Stay close to your objective, and stay persistent. No matter how far away it seems, you are closer at fufilling your dreams than you were yesterday.
Today, think about the reasons you want to quit, now remember why you started. Stay in the game, and just do it like nike, besides nobody remembers who quit anyway.