'Then, the seer dwells in his own nature.' When there is the control of the thoughts,of vrittis,the mental modification in citta, the seer will be in his own true nature.
Due to the modification of vritti, citta identifies with other things, and the individual will be elsewhere.
When there is a change in vritti, modification, there will be a new thought. Klishta is a modification connected with pain, sufferings or affliction.