The first part agrees with what YOU said. The next questions your concept of, and the significance of, your choice of the word 'release' and a physical solution (throwing the cards away) when the problem is internal (according to you; 'addiction' and 'obsession') . The rest agrees with what you already said; 15 readings a day (especially on the one subject) indicates a problem that has surfaced 'through' your use of tarot ... not BECAUSE OF your use of tarot.
Doing 15 of anything a day e.g.washing your hands 15 times, drinking 15 glasses of water ... doing anything (except breathing) 15 times a day is something that should be looked into (beyond the actions into the motivations), i.e. examined.
What part don't you get ?