In order to excel in the workplace, it is crucial to navigate office politics and cultivate shrewdness and adeptness in handling professional relationships. Here are some key tips to help improve your career strategy and shrewdness:

1. Never offend your direct superior. It is important to maintain a positive and respectful relationship with your boss, as someone who has the power to help you can also have the power to ruin you.

2. Adjust your mindset. It is essential to cultivate a strong and resilient mindset in order to not be overly sensitive to the words and actions of others.

3. Don't lose sleep over a few words from others. It is important not to let the words and actions of others affect your peace of mind and well-being.

4. Don't always show off your intelligence. It is important to be strategic in how you display your cleverness and not to constantly show off your intelligence.

5. Understand and accept unfair treatment. It is crucial to recognize when you are being treated unfairly, but it is not always necessary to confront others about it.

6. Building better relationships through small gestures. Rather than trying to impress your superiors with extravagant meals, it is often more effective to build rapport through multiple casual meals.

7. Be mindful of your seating arrangements during company gatherings. It is advisable to avoid sitting with individuals from departments such as procurement and finance.

8. Be tactful and assertive. Truly skilled individuals know how to use diplomacy and soft words to achieve their goals, while also being assertive and firm when necessary. It is important to never reverse this approach.

By following these strategies, individuals can enhance their career strategy and shrewdness, and effectively navigate the complex dynamics of the workplace.