Finding the subject of a gerund

In a sense, the higher you rise as a leader, the more lonely you are likely to be. After all, leadership limits the number of people in whom you can confide. It is awkward, not to speak of unprofessional, to complain about one of your employees to another employee. Then, too, you need to be wary about voicing complaints against your superiors to the people who work for you. Such complaints are bad for morale. Even worse, they can threaten your job security.
[Source: Reading for Results Ninth Edition by Laraine Flemming]
I'd like to know if the subject of "voicing" is you.
Thank you in advance for your help.