The My Jobs window lets you see all of the jobs on which you’re one of the traffic assignments (e.g., creative director, project manager, copywriter, etc.) or the job's AE. It also includes jobs for which you are the account executive (i.e., the AE/Team field). Compared to the lookup list, the My Jobs windows only shows your jobs. It works like the jobs Lookup List, except that it filters out jobs that you're not a part of.