When account managers go years without speaking to customers, it signifies a failure of leadership, not just the individual. This lack of oversight is framed as "malpractice" because it allows reps to avoid core relationship-building activities, directly endangering customer retention and revenue.

A common mistake for new managers is to do their reps' jobs for them, especially in tough deals. This approach, born from insecurity or a desire to prove worth, prevents the team from developing self-sufficiency and ultimately fails to scale. The manager's true job is to build skills and muscle in their reps.

A leader's role in a sales call is to empower the rep, not to perform. When a manager takes over a meeting, they disempower their rep and effectively take ownership of the account. MongoDB's CRO Cedric Pech calls this 'promoting yourself into being the rep,' a mistake that stunts rep development and creates customer confusion.

Promoting top individual contributors into management often backfires. Their competitive nature, which drove individual success, makes it hard to share tips, empathize with struggling team members, or handle interpersonal issues, turning a perceived win-win into a lose-lose situation.

Leaders often expect reps to drive one-on-ones, but the best leaders prepare beforehand with a clear point of view and desired outcomes, treating their reps like internal customers who deserve preparation.

A sales leader's job isn't to ask their team how to sell more; it's to find the answers themselves by joining sales calls. Leaders must directly hear customer objections and see reps' mistakes to understand what's really happening. The burden of finding the solution is on the leader.

To make role-playing an effective training tool, sales leaders must demonstrate vulnerability by going first in front of everyone. This signals that the goal is collective improvement, not performance evaluation, and encourages reps to engage openly without fear of judgment.

Ineffective leaders use Quarterly Business Reviews to demonstrate their power by grilling reps. Great leaders use a single deal review as a live coaching session for the entire sales floor, knowing one person's mistake is likely a problem for hundreds of others.

Many leaders mistakenly manage their team as a single entity, delivering one-size-fits-all messages in team meetings. This fails because each person is unique. True connection and performance improvement begin by understanding and connecting with each salesperson on a one-on-one basis first.