Q&A: Help overcoming resistance

I’ve reached the point in my marketing business where the main path for growth is adopting an agency model. The plan is to hire experienced, client-facing contractors to join my team and work directly with clients to manage their accounts. Part of me is excited and confident about this expansion. However, I reached this point in my business two years ago and had a disappointing experience with the first client-facing team member I hired. Just a few weeks later, I hired a wonderful team member who I’d actually mentored previously–and then my pipeline dried up. I’ve spent these two years focused on increasing the lengths of my retainers, as well as the quality and caliber of my clients so that my business is in an even better position to bring on a new team member and maintain a stable pipeline. What advice or mindset tips do you have for overcoming the resistance I have to hiring stemming from my previous negative experience? Also, do you recommend I make it very clear to clients before we get on a sales call that they’ll be working closely with an account manager as opposed to working solely with me?