|"When in Rome do as the Roman's do" - St. Ambrose
Knowing and exploiting in-group-out-group biases (IGOG) can help you achieve success.
This effect is so powerful that if you raise a tiger from infancy it won't eat you because you're part of its in-group.
All prejudices stem from IGOG biases.
You can improve your success by always adapting to the behaviors or customs of the country, city, or group you belong to.
When you start a new job or go on an interview try to adapt to the group. Dress as they do, speak as they do, adopt the same working hours as they do.
When speaking use terms that the recipient associates with their in-group.
Some things to be aware of:
There is a push for diversity in corporations these days, but I still think you're better fitting in than being different.