Being a psychotherapist taught me that almost everyone shares one insecurity

The first step for anyone who wants to overcome the fear of not being good enough is recognizing that it's a problem. You have to acknowledge that just because you think you're not good enough doesn't make it true.

But the problem is that once you believe you're not good enough, you'll keep looking for evidence that reinforces your belief. You'll assume every mistake, rejection, and failure is proof that you don't measure up.

And you'll overlook or excuse any evidence to the contrary. You might even chalk up achievement to "good luck," or you might assume that any success you have stems from other people.

So you have to be open to proving yourself wrong. Be on the lookout for evidence that you are good enough. Perhaps you have good people in your life who love you. Or maybe you make a difference at your job. Keep a running list of all the reasons you are good enough, and read it over whenever you doubt yourself.

The next steps in overcoming the fear of not being good enough are person-specific. Some individuals need to heal old childhood wounds that left them feeling as "less than." Others need to change their behavior — and start acting like a confident, worthy person — which can help them see that they are, in fact, good enough.

Often these steps can best be achieved with the support of a mental health professional. So if you're struggling to feel worthy, reach out to a therapist. A few therapy sessions might be enough to help you build the self-worth you need to finally feel good enough.