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.

Underperforming sales reps are not failures; they often lack proper coaching or strategic frameworks. Investing in their development can transform these reps from liabilities into consistent performers, saving the high costs associated with turnover and re-hiring.

A common failure for sales leaders is to act as a "super rep" who jumps in to save deals. This behavior makes them a bottleneck and prevents reps from learning to solve problems independently. True leadership is coaching and enabling the team to succeed on their own, not doing the work for them.

Leaders misallocate time on low performers who won't improve or top performers who don't need coaching. The greatest return on coaching time comes from investing 80% of it in the solid B-players (the "six pluses") who have the raw ability to become elite A-players.

First-time managers, often former top performers, default to doing the work for their reps. This creates dependency and prevents the team from developing self-sufficiency, which is crucial for scaling. A manager's true role is to build the team's skills, even if it's slower in the short term.

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.

Managing pipeline numbers is a lagging indicator of performance. Effective sales leaders coach on leading indicators: the specific activities and customer interactions happening at the deal level. They influence outcomes by asking "Why should the customer buy?" instead of just reviewing the forecast.

Many sales organizations mistake "coaching the deal" for actual coaching. This is merely reactive performance management. True coaching focuses on developing a rep’s core capabilities—like discovery or closing—which prepares them for any future deal, not just the current one.

Companies often invest heavily in training individual reps but see little adoption. The bottleneck is the frontline sales manager. Scaling only happens when managers are equipped to coach, reinforce, and embed new skills and processes within their teams daily. Without them, training is a one-off event.