If you won your dream car, within a few years, you'd probably think of it as just your car. (At least, you wouldn't be jumping for joy every time you saw it.) The same thing, unfortunately, happens to employees and their jobs. That's when it's time to shake things up. You might initiate programs and activities, such as workplace fitness challenges or book clubs, to keep employees engaged and foster a sense of community. You could also identify employee interests and goals, and facilitate their growth through training, conferences, and coaching.
You can also increase engagement through energizing team dynamics and connectedness. This does not mean treat your employees like family. We repeat: Your company is not a family. It is, however, a community bound by similar interests and goals (even if that goal is just to get a paycheck). As such, it's important that your employees get along with each other. When their interests and goals are aligned, they're much more likely to work effectively as a team. Establish team or departmental goals and facilitate opportunities for conversation, brainstorming, and problem-solving. You can incentivize friendly competition, but ensure that team members also have opportunities to build each other up, such as through mentorship programs for new employees. Both managers and employees should be encouraged to recognize and celebrate each other's successes. When everyone is working together towards a specific objective, it can be exhilarating, motivating, and contribute to a high-performance culture.