Here is an example of constructive feedback to an employee who is holding others on the team back. Please note that this is just an example, the name John here is used as an example and it does not refer to a real person. This is just an example I wrote on how I would have given constructive feedback, I hope that you find it helpful.  

I asked the employee to meet me in my office during the afternoon hours... 

Good afternoon John, How are you today? 

Thank you very much for taking the time to meet with me this afternoon, I am glad that you could make it on very short notice. I promise that I won’t take much of your time, as I know that you are a very busy person always working hard to bring out the best of our organization. And on top of it all, I would personally like to thank you for choosing to work with our organization. You are a valuable member of our team, and your positive attitude has helped us all continue to feel motivated. It has been a reward having you here. I hope that you enjoy working with our organization and feel at home. 

As promised, I won’t take much of your time. I just asked you to come in so we might have a talk on how we can move things forward better. As you’ve noticed, things are moving really fast, and in order for us to succeed in such a competitive environment and serve people better, we need to be on top of everything.  We are facing competition on the market and time and cost pressures internally.  This was the reason that led to our last meeting, where we had the chance to discuss what we needed to do in order to move forward. As you can remember, the outcome and agreement of that meeting were that, if we needed to effectively manage these circumstances and encourage innovation, we all need to be a part of a team culture that encourages rapidly testing and iterating upon new ideas. We also agreed that there should be rapidly testing and iterating upon new ideas. 

However, I have learned that as a man who is always committed to delivering the best, this has become a challenge to you. With all these changes taking place, I have noticed a change in your performance lately which is somehow contrary to what we agreed upon as a team.  I can see that you are struggling with wanting to find the perfect solution before taking action. Though this is done with the best intentions in mind for both the team and the entire organization, it is somehow causing delays, impacting team performance, and frustration for many team members as they feel held back. I understand that it is difficult to adjust to these new ways of doing things, and this is why I wanted to check in with you to discuss any challenges you might be facing, and see how I can support you better so that you can feel more comfortable with adjusting to these changes. 

I want you to know that in the midst of all these changes, I and the team are here for you, you can count on us. I would like you to work more with the team. And if there is anything I can do to help you in the future, I would appreciate you coming to me with any issues affecting your feelings toward work, or any other challenges that you might be facing, so that we can work on them together. 

You have consistently produced great work for our team and connected us with valuable clients, and I would really love to see this spirit continue and move with these new changes. If you have anything that bothers you, please feel free to share it with me. 

Thanks for your time! Thanks for coming in!

I hope that it was helpful.