have a look at MN20 http://www.accesstoinsight.org/tipitaka ... .than.html
MN58 http://www.accesstoinsight.org/tipitaka ... .than.html
although a practice of meditation is always good, this would include sense restraint as-well as formal sitting, remember the buddhas advice
Dhp verse 362;“With hands restrained, feet restrained, and speech restrained, skilled in self control, inwardly settled, pleased & solitary of mind - this is said to be a mendicant.”
Dhp verse 183 “Do not perform any unskilful acts, skilful acts are the way of a mendicant, so purify your own mind - this is the wisdom the Buddhas teach”
Dhp.v.184 Forbearing long-standing stress is the greatest austerity, more-so is the superiority of nibbāna: this is what the Buddhas say.
Those gone-forth should not injure others, nor are they a contemplative if they tread the path of abusing another.
Dhp.v.185 Not insulting, nor injuring, restraint in line with the monastic precepts, Moderation with food, dwelling in seclusion, and dedication to the concentrated mind: this is the wisdom the Buddhas teach.
hope these help