This post will offer some brief advice on what to do when things don't go as planned. This could be something such as a traffic jam making you late for work or finding out that you didn't get the position that you interviewed for.
1. Accept it. Reflect on the situation and learn from it. (Please note that I said "reflect" and not "dwell" which can get you bogged down in dredging and re-living a past experience.) What could you do better next time?
2. Tweak it. You're aware that things haven't gone as planned and you now wish to somehow make your current situation more agreeable for you. You could do this by taking a shorter break if you're late for or by applying for another position with a company/organization that you want to work for.
3. Have a backup plan. Do you have a Plan B in case your original choice is unavailable? Are there 5 other businesses that are vying to interview you? With this option, you could combine options 2 and 3, but also you could have an idea in advance of what you wish to do in case, your first plan is unfulfilled.
There are times, of course, when things will not go as planned: you can't find a needed report, you damaged a borrowed CD, you get a lousy haircut. What's useful when things don't go as planned is to be open to change. This doesn't mean that you if you didn't ace an audition it means that you're not destined to be a great actress. Instead, it means that there could be some adjustment that you may need to make in your approach, whether it's learning more about acting or finding a different play to audition for. A person who's open to change is more adept at coping when events do not turn out as planned. Such a person has a definite advantage over someone else who's stewing and brewing over what once was.