I am weak in closing the deal with job interviews, mainly. However I don't know what is the average ratio of offers to interviews for developers applying to mid-level jobs.
So I guess you're saying I should be studying people skills, I guess? I often hear that I need to get mock interviews but there are few official sources for it. Also it's not very instructive to tell someone to just find any friend. Most people do not have experience interviewing programmers, so they wouldn't be good for mock interviews. And mock interviewing with friends would introduce too much of a positive bias you won't have from strangers.