As usual, you can take advantage of custom instructions to guide ChatGPT's personality in a direction you like, especially when the presets don't give you those options. For example, if you'd like ...

This new adjustment option can be found in the ChatGPT settings. Head into your settings and then go into Personalization.

Addressing persistent user complaints about its artificial intelligence (AI) being either too robotic or overly sycophantic, ...