Allow second chances and do-overs.
Build in opportunities for reflection on how/why things went well or poorly
Make high-quality, appropriate tools available.
Give opportunites for meaningful, low-stakes practice.
Give opportunities to operate within and outside comfort zones.
Step outside what's comfortable
Show students your learning process
Encourage generating multiple solutions to a problem
Reflect and refine
Student may take a more positive spin on an assignment if they if there is an element of fun to it
Show students that it's okay to laugh at yourselves when you've tried something new and it doesn't work out quite the way you thought
Create win-win situations
Teach and model how to give good feedback.