You cannot lead with poor attitude. The attitude which you do a lowliest task marks your character. If your attitude is poor doing a lowly task you will never be qualified to do a leaderly task.
A lowly task, even sweeping with a broom, can be done elegantly and excellently.
A leaderly worker performs his tasks in a leaderly way, with a marked level of diligence, elegance and excellence that serves his master and models excellence to his fellow works.