A wounded player
Good athletes go through intensive, tough trainings. And when they play in a game, they play hard. Sometimes, almost unavoidable for anyone that's involved in competitive sports, they'll get wounded. It's very rare if you can find anyone who's successful and has never been wounded. In extreme situations they might need to carry on despite of the wound, but it's really not very good for their health. Although they might struggle with the fact, the best thing to do is to get treatment and just rest and allow the wound to heal properly. If they go on playing or training, the wound wouldn't get healed quickly and properly, it might get even worse, and influence the result in a greater way.
Similarly, if we feel wounded in other areas, it might not be physically, but mentally, emotionally, we need to realise that it's ok. We haven't failed. Everyone goes through this stage sometimes now and then. We just need to be honest and realistic with ourselves and give ourselves some time to let the wound heal. Have some time out if it's necessary. If you carry on, you might not be as effective and you might even do more damage to the wound.
Remember, what you feel when your wounded and when your not can be dramatically different. Just imagine an athlete trying to run a 100 metre race with a fractured leg!