When asking someone to be a reference for you, you'd better be darn sure they're willing to say positive things about you. Although it can be awkward to ask, having someone who will testify to your character and work ethic is really important as you're job searching. Lots of companies won't ask for references until you're already deep into the interview process. By that point, a reference can absolutely make or break your prospects of working for that company. While I've never done so myself, q…