What my parents told me is true after all, that good posture will make you more successful. Certainly, if you stand up straight, pull your shoulders back and your stomach in, you will feel more positive, more energised and more confident, which will cause you to think and act in a more powerful way.
Not only will your good posture empower you but you will also then unconsciously convey that sense of confidence and leadership gravitas to others. People will view you more positively especially when interacting with them in either group meetings or one to one. If this good posture is sustained it will likely lead to increased career success.
Source: Mental Toughness Partners