Just because your toes are touching the end of a shoe does not mean you should give up immediately. If the toe-box is non-rigid, try the rubbing alcohol stretching methods in Part 1. Gently massaging the toe-box out with your hands can help as well, especially for narrow toe boxes squishing the pinkie toe.
Using methods to help pull the heel back in the shoe, as mentioned in Part 5, can help alleviate the pressure on your toes by better distributing your weight and positioning in the shoe. It may be that the shoe is the correct size, but your foot is sliding slightly forward.
Overall, don’t push it. If the shoe is painful and your toes are feeling too crushed, it’s probably time for a different size.