The very concept of duty is based in the idea that you are the doer.
If you are able to accept that you are an instrument.. 152 kata lagi
People must live their whole lives and do all their duties (stipulated actions as per the vEdAs). There is no other way by which karmaphala – the consequences of your actions do not accrue to you – other than living thus – being detached, non-coveting and seeing Is’A everywhere. 207 kata lagi