>>96894848
Yes. You can:
>Educate your people about Chaos so they understand the threat
>Provide them a comfortable lifestyle that makes forging pacts with mega-satan unappealing
>Work with stable psyker species such as Eldar or Nicassar to train your psykers to control their powers
>Utilize anti-psyker tech such as Necron pylons
>Create a positive religion for people to pour their emotions and faith into, creating a warp entity that will protect them
>Dull your souls like the Votann and Tau to reduce Chaos's ability to notice or care about you