You might like another's duty, and dislike yours. But still, do your own duty, and not another's, even if you can do another's duty very well. Or you'll go on being caught up in the field of opposites. And there will be no end to your suffering. Many people might say that your duty is morally wrong, according to their moral standards. Still that's your duty, remember. It's the action that keeps your mind pure, beyond likes and dislikes and other pairs of opposites. So don't give it up.