When i was a beginner in trading i am really losing a lot of money but all the i money i lose is motivate me to practice everyday and after i lose my money i promise to myself to be an expert trader next time so i wil not lose my money anymore.
You can't promise that you would never make a mistake ever again. It's something we have no control about. We try as best as we can, but later we may face mistake again and again. As most people said, sacrifice is the thing that we gotta take someday. We don't know whether it's in the first time, in the middle, or maybe at the end of the story. Just keep going and keep learning.