कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफलहेतुर्भुर्मा ते संगोऽस्त्वकर्मणि ॥

You only have right in doing the karma and not in the outcome of it.  

Don't take credits of your karma and you should also not indulge in doing nothing.