For each daily austerity the respective shlokas are included in their practice itself – for instance, a shloka to recite before sandhyavandanam, is included in it; for each sankalpam, one must start with ‘shuklAm bharataram..’ which is included in their practice itself.
For regular household activities – like after waking up one should chant the name, Hari, before partaking food Govinda Nama should be chanted, and apart from these the relevant shloka has to be chanted for specific austerity.