A wine steward provides suggestions on wine. He or she is intimately familiar with the wines on offer — the intricacies of their composition, how they sit on the palate, what they pair well with and so on. A key difference between a wine steward and a career steward (aside from, uh, the wine) is that you can rely on someone else to provide you with guidance on your selection. You must be your own career steward. You know yourself best and are in the best position to identify how different career choices and options will sit on your palate (and with the life choices you are most interested in making).