しかたない しょうがない Shikatanai or Shoganai is an important word in Japanese. It can be translated "it can't be helped." It's often used to describe Japanese culture, thinking and values. Shikatanai or Shoganai is essentially a philosophy. It says that if something is out of your control it's better to quickly accept it and move on.
You sometime say 「しょうがないか」「しかたないか」to reconfirming and justifying that fact that you given up.