Appendix 5. Vyavasāya (Sustained effort)
vyavasāyātmikā buddhirekeha kurunandana || (2.41)
Here vyavasāya refers to sustained effort or continuous industry focused on a single goal. That is penance (tapas). A person needs to be of a single-pointed mind to satisfy any immense objective. If, on the other hand, his mind were to vacillate from one side to another every moment, none of his efforts would go very far.