Adversity, worst-case scenario, misfortune. There is a good chance you’ve met one of them and made it through.
When you first met them, you may have been worried a lot, wondering whether there was another worst-case scenario atop the worst-case scenario. You may have many sleepless nights that jogging in the morning didn’t alleviate the crucifying anxiety.
Despite the hardship, you survived. Perhaps the situation is no longer as ideal as it was. The good news is that you came back an entirely different person, one who learned how to handle the storm. The next harder challenge doesn’t seem so intimidating anymore.