Everyone fails. At some point in your life, you're going to do something that you feel is inadequate. You can move past it, but it can help to give yourself a set time period at which point you need to move on.
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You can't always rush emotional recovery. However, not every failure needs to take a lifetime to get over. Most of the time, the best thing to do is to feel bad for a bit, analyse what you could do better next time, and move on. Giving yourself a set time period to get over it -- an hour, a day, a week, whatever fits the mistake -- can force you to confront it, as well as put in perspective just how much (or little) it matters. As business blog Entrepreneur explains:
The most important step to overcoming adversity and negative feelings: Don't wallow. Instead, set a deadline for accepting what's happened, at least emotionally. This emotional acceptance stage is crucial -- and so is the deadline. This stage is defined by the amount of time it takes for you to accept your new reality. You'll have to give yourself a deadline for getting through this period.
If you screw up so badly you lose your company millions of dollars, it's OK to feel bad for a little longer than most. But if you botched a weekly presentation, or didn't meet your sales goals, don't let it cripple your confidence. Give yourself a reasonable grieving period, and when it's over, move on.
You Tried and You Failed. Here's How to Rebound. [Entrepreneur]