You may want or need to reset your Sims if they become stuck or unresponsive. There are two ways you can reset your Sim. For either, open the cheat window by pressing CTRL + Shift + C. Hold all these keys at the same time to open the window.
Type resetSim Firstname Lastname and click Enter. Make sure you enter the name of the Sim you want to reset. For example: If you want to reset Gobias Koffi, type: resetSim Gobias Koffi, and press Enter.
If you need to reset all of the Sims in your current game, you can type resetSim *. The resetSim * cheat command may not be able to reset all Sims and you may receive a “Sim not found” error.
Resetting your Sim will return it to a playable state but the Sim will not return to its home lot and its needs will remain the same. This works for all Sims, not just the ones you are controlling, except in cases of “Sim not found.”
Resetting your Sim will cancel your Sim's wishes and moodlets, so make sure to check back with your Sims if you need them to complete specific actions.