Editor's Note: This is the seventh article in a 10-part series identifying the best sales techniques for 2015.  To view the rest of the series, visit 100 best sales ideas 2015.

80. Overcome the Impostor Syndrome.

If, despite your sales success, in your "heart of hearts," you dismiss your accomplishments as luck, timing or convincing supervisors and clients that you are sharper than you really believe you are . . . you are a victim of the all too common "Impostor Syndrome." The fear connected with this syndrome is that sooner or later a real expert will look at your body of work and recognize that you have been faking it all this time. Steps to reverse the syndrome:

• Recognize that it exists and it is based on false beliefs about yourself
• When you receive positive feedback, internalize it and believe it, don't discount it
• Never attribute your success to luck. Luck is preparation meeting opportunity. It was your preparation that enabled you to take advantage of an opportunity.
• Recognize that no one is perfect. You will have little problems. These do not erase your accomplishments.
• Keep a journal of each success you have and review it frequently.

— Jack Singer, Ph.D.