DEAR HARRIETTE: Recently, a guy I haven’t talked to in years recommended me for a job. Out of the blue, it seemed, he called me and told me about this opportunity. A few months went by before things came together. Well, I got the job, but in the flurry of everything, I forgot to contact the guy to tell him I got it. I’m embarrassed that so much time has passed, but I feel like I should still let h…