The phrase "a completely different mindset" is correct and usable in written English.
You can use it to describe the difference between two ideas, beliefs, or approaches. For example, "Conventional education focuses on memorizing facts, but modern education encourages a completely different mindset, emphasizing critical thinking skills."
They have a completely different mindset".
He just went out with a completely different mindset.
It's a completely different mindset; there's no block between the bricks and the clicks.
He would like to see people like "behavioural psychologists, communication experts, actuaries, finance people and even corporate strategy people", who would "bring a completely different mindset, a completely different set of methodologies and skills, that we as a security community, really need".
It instead will require a completely different mindset that recognizes why drugs fail to come to market, how we can utilize data integrated across human and animal health, and a precision medicine approach designed to discover new targets and lead compounds- possibly before the conditions the target proteins underlie are even understood clinically.
Sudden wealth creates new opportunities, new financial goals and a completely different mindset.
The tight cohesion one might expect of a group exhibition gives way to a series of works that require completely different mindsets to approach, almost acting as their own individual micro-exhibitions.
Highly targeted drugs, perhaps linked to a genetic test, call for a completely different regulatory mindset.
But is the western idea of democracy what the Middle East masses, imbued in a completely different cultural mindset, actually have in mind?
"This is the story of a man who, like myself, came out later in life and came into a world that he could never have anticipated -- of sexually voracious men and of young people who have a completely different social mindset... the best thing we can do is to be honest with ourselves about what our needs are, and find someone with comparable needs who can help us be who we are".
You might be of two completely different mindsets, but you must know you are together because you are meant to be.
