As a leader, if you are spending time motivating people, then something is really broken somewhere.
At one level, your role is to allow your team to take risks, make mistakes and ensure they are learning as they fail. Yes, this involves keeping them from getting demotivated after a failure or a loss. But if you end up spending your time motivating (just to get basic stuff done) a specific person, I think its a grave injustice to your time and to other members in your team.
Side Note: Hiring should ideally ensure that you bring in motivated people. If you’ve fixed the hiring part, you need to have a strong discussion with other stakeholders who are leaving an impact on your team.