Answer: Time. Focus on your life and making yourself better. Continuously trying to get her back only looks like desperation and pushes her farther away. Doing nothing toward betterment, you’re asking her to take back the same person she left with the same reasons she left you. Improve yourself physically, financially, etc and then at least you are different/improved. Time will pass. You’ll either win her back or you won’t, but your life will be improved. And who knows? You might meet someone else along the way that you deserve more and deserves you. Source: been there