Do you want to continue being average in 2021?
If not, seriously tell your employees to think outside the box, and (after you define what is "acceptable" together) tell them to try out new things, make acceptable mistakes everyday.
Encourage them to challenge you, everyday.
This is what we try to do. Even if we don't finish every day getting an "A", the effort is an awesome way to build resilience, creativity, and improve everyone as individuals in addition to contributing to the company.
With the hope for a 2021 in which we'll not only talk about comfort challenges, but also act on them in "smart" ways to expand our horizon...