Dear Friend,
I am sure Krishna or the our Allmighty knows what has to be done. And along with your devotion he also says us to apply our skills, knowledge to do our Duty.
There was a small story told to me: There were three fisherman travelling in a Boat to cross a mighty Sea. It was a fine morning, clear sky and calm waters. It past noon and they crossed almost halfway and during the the evening times everyone was joyous that they were going to reach home in sometime. But suddenly it started with some thunders, heavy rain, huge waves.. they started panicking. One of them prayed to Shiva "Save me Save me !!..." another to his favorite God "Save me Save me !!..".. and the other told "Pray and start swimming we can reach the shore n we are not far away from the Shore." They told "God shall save us" and stayed in the Boat. The 3rd Guy prayed to his Favorite God and jumped into the Sea, swam across and saved his life. Well i hope you got the Moral of the Story.
"Serving by Doing"
Rgds,
Sreenivas.