This can be done in a three-part process:

• Identify the key skills the salesperson will need to help them make their quota. These skills should be things that are highly relevant to your product or service.
• Teach your new recruits these key skills (attend calls with them and watch them perform, give them audio programs to listen to, send them to sell seminars, or conduct your own.)
• Continue checking in with your salespeople over time to reinforce what you've taught.

There's always room for improvement in growth even if you're at a manager level. Be humble enough to realize that you still have space to learn.

Identifying your weaknesses will also help you improve you can make even more progress by working on your weakest area or skillset.