This is what I would do, here are a few recomendations
1- Understand your clients goals and needs.
2- Let your client know that you are with them and map out a plan with them, making sure you complete a comprehensive movement screening, and strength evaluations.
3- Create a calendar and hold them accountable
4- Continue to give them an amzing workout, and have fun with it.
lastly, if your client is working towards a goal ie. marathon, tough mudder…. have them sign up and commit.