Someones' mindset is a person's way of thinking, their opinions, mental attitude, disposition or beliefs.

1. When I took over, staff were unmotivated and used to under performing, so the first thing I had to do was change their mindsets. 
2. I go into every negotiation with the mindset that I am going to get a deal done. Doubt and negativity only makes things more difficult.
3. When constructing a marketing campaign for a new product, you have to consider the mindset of the target audience.

1. A positive mindset can influence your performance.
2. The community have a very conservative mindset when it comes to new developments in the area.