We’ve all been told the importance of finding a mentor as you build your career. Among other benefits, it can lead to higher job satisfaction and better professional prospects. According to one report, employees who had mentors were promoted five times more often than people who did not. But the truth is that senior leaders with the time and interest to support you are in short supply, so it can be hard to know where to start. If you don’t already have a mentor, how can you actually get the guidance you need?