Physiological Actions:

Imagine that your anger is really at its peak. There is a natural reaction of the body corresponding to this psychological change. In this changed state, your blood pressure increases, your face becomes red, your body becomes stiff and your heart beats faster. All these reactions happen so involuntarily and automatically without even your conscious control. In the same way, when you are in a state of extreme happiness, you will have great smile in your face, the cheeks blush, your eyes brightens & the whole body becomes radiant. This is also a natural reaction to your internal psychic state and you may not even aware of these changes as all of these happen involuntarily and so automatically.

Reverse effect: If one voluntarily and consciously changes his physiological state then his internal psychological state changes because of the change in the physiology. This is a powerful way to stay happy & confident in life. But, this requires a bit of self-practice & training.

For example, a simple smile on your face induces a state of joy. Keeping the chest up & with little shoulder drooped down increases the level of confidence. Keeping our eyes stable and looking into the eyes of the person standing opposite to you generates a powerful bonding. Having a stable posture with the spine straight adds stability to our mental state. Long deep breathing induces calmness in our thought process.

Changing the physiological state to change the internal psychological state is a voluntary action. Whereas, the internal psychological state that changes the physiology of the body is an involuntary reaction. So, train the body to drill your internal psychic state voluntarily.

Summary: A Change in the external physiological state reciprocates a corresponding change in the internal psychic state. An upright "chest up" posture induces an instantaneous confidence in you. Long deep breathing induces calmness.

Here is the simple strategy:

Alter your physiological body posture to get the required instant confidence in a weird situation such as meeting your boss/stranger.

"EXTERNAL PHYSIOLOGICAL STATE RECIPROCATES THE INTERNAL PSYCHIC STATE"