The phrase "altering the mindset" is correct and usable in written English.
It can be used when discussing changes in attitudes, beliefs, or ways of thinking, often in contexts like personal development, education, or organizational change.
Example: "The workshop focused on altering the mindset of participants to foster a more innovative approach to problem-solving."
Alternatives: "changing the perspective" or "shifting the mentality".
Thus Korean Air worked hard on altering the mindsets of their flight crews and drew a line under a series of fatal accidents.
It's hard to alter the mindset of a would-be terrorist, but it's comparatively easy to introduce measures that could reduce gun-related fatalities in general.
To elevate someone dropped 13 times by his country to the high priesthood of common sense is some achievement, and shows to what extent Brian Ashton has altered the mindset of English rugby, from the players to the public.
He hopes the experiment could kick-start more fundamental change and alter the mindset of a generation.
This fabrication altered the mindset of most Americans to accept fictional Second Amendment rights that permitted the proliferation of all manner and kind of dangerous weapons.
Posited by the authors of that study as an ex post facto explanation, receipt of effective antiviral therapy could have altered the mindset of HIV-positives by removing a hitherto imminent and grave threat to survival.
"Coming to Mexico is the start of the future and I see the young footballers as symbols of a new Rwanda because they will alter the mindsets of people around the world".
The fact that the Arab states manipulated the Palestinian refugee problem over many decades to their advantage does not change the reality on the ground; it did not alter the Palestinians' mindset, their perception of what the Israelis have done, or their sentiment and disposition about their plight.
Such a delivery totally alters the mindset of batsmen and bowlers, and the strategy of the latter, who rather than look exclusively for the edge to the close catchers, can now attack the line of the stumps from back of a length knowing that somewhere there might be another like the one that did for Compton.
Another approach is to try to change the mindset of road users by altering the appearance of the road.
