Om Swami
How does doing seva help with my ego?
Serve in the spirit of service, not superiority
There is no good way to change the nature of the ego; all ways are painful. But when you do anything in life in the spirit of service, you always get more out of your actions than when you act with the feeling that you are superior.
When we serve, when we do anything in our life in the spirit of service, whether you are a doctor, an engineer, unemployed, whatever you are.