I was speaking with a project manager the other day, who's looking for a job but does not have a PMP certification. He was worried, so I asked him how he presented himself to potential hiring managers and HR people. He said, “I don't have a PMP, but I've been really successful managing projects for the last 20 years.”
I suggested he turn around the sentence: “I've successfully managed projects for 20 years,” and stop right there. If you've been reading this blog for a while, you know how I feel about certifications (Make Job Requirements Relevant to the Job) and their relevance to the position.(Too often, certifications are the lazy manager's way to avoid analyzing the job.
Candidates, when you're looking for a job, focus on the skills you have. Consider your answer (or multiple answers to) Ask for a Candidate's Most Significant Accomplishment. Those are your strengths. BTW, I agree with the comment on that post that deciding what that accomplishment is and writing or speaking about it is a difficult thing to do.