I think the general just of the admonition to “do violence to our passions” is to control our passions through abstinence. For instance, I’m a foody so I should fast, thus doing ‘violence’ to my passion for food. If you’re a big fan of television, abstain from television and devote that time to prayer, etc…
I suppose one could read in to that an ascetic message too, but I would caution strongly against such things (e.g. self-flagellation.)
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