There are a lot of interview prep places out there - just be careful of the consultant's qualifications...have they ever been in a position to do hiring, and preferably pilots? Do they know what it takes to get hired, or are they simply a pilot who has been (unsuccessfully) through a bunch of interviews and is looking to make a quick buck?
I went to Cage years ago, and while I don't want to slam her or her company, the best advice I received was to "get a new pair of shoes." Just be careful.