If revenge motivates you, go for it! But the main thing is to set your game in order.
Viswanathan AnandCarlsen will be ridiculously difficult to play against. (on the 2013 World Championship match)
Viswanathan AnandFor me, chess is not a profession, it is a way of life, a passion. People may feel that I have conquered the peak and will not have to struggle. Financially, perhaps that is true; but as far as chess goes, I'm still learning a lot!
Viswanathan Anand