If you're undergoing a significant version change in the product or system your users work with, run the current and new versions in parallel for a while.
Default to the current, offering low risk, bite-size ways to dip into and explore the new version.
Be clear about the date at which the user will be defaulted to the new version.
Provide ample time for incremental exploration (measured in months, subject to the size of the change). Once the user has been defaulted to the new, maintain provision of access to the old for a time, to increase certainty further.
Finally, provide a clear date by which the old will no longer be accessed.
What significant systematic changes are you anticipating for your users? Where can you reassure them with a smooth migration process that reduces stress and, ideally, reinforces the value of the new?
We often recoil from the new and unknown, but how can we use exposure to reduce risk aversion?
Sudden, unexpected change can feel difficult to stomach. How can you use 'change exposures' to reduce discomfort?
New chapters in our lives mean creating new versions of ourselves. How can you make it easy for people to take the leap?
We stick to what we know, even when there are better things available. How can you offset this with a low risk sample?
We're evolutionarily hardwired to avoid change where we can. But how can you give people some reassuring control over it?
Our past efforts can often get the better of us. How might you test out a different direction in a lean way?
We're averse to what we don't know, slowing down progress. How might you avoid this with small info drips spread over time?
A fresh week, month or year offers a convenient opportunity to let go of sunk costs. Where can you use time to get closure?
With loss, perception is everything. As long as we've gained something, we can let go. How can you reframe past efforts?
If a better path to reach our goals has been found, letting go of our efforts will be less uncomfortable.
In times of change, we seek out leaders to help us move forward. How can you create reassuring clarity through your people?
As social creatures, we're greatly reassured by the actions of others. How can you use this to reduce aversion to change?