If you want to be successful in life, you need to remember not to quit. Ever. Now, this does not mean that you should do the same thing that has gotten you the less desirable result again and again while expecting a different one. Not quitting refers to the goal that has been set. Say you want to achieve something, that should remain there. The paths however are something that you should be adaptable and creative enough to improvise and better your chances. If you realise that this route that you are taking will not amount to the success that you desire, then perhaps you need to be looking out for others. Remember, it is not the goal that you should quit on, but the failed method of getting to it.