I think the key to avoiding this sort of situation is simply to treat every purchase as a 'forever' purchase. It forces you to consider the realities of THIS bag in YOUR life - is it wearable, is it practical, does it suit your life and style? Trendiness/IT-ness, how many fashion-bloggers have it, how LE it is, how many reveals are happening on the forum are
irrelevant
I have made only a few purchasing mistakes in my time and when that happened I usually gave the bag away or sold it on eBay for peanuts (did this twice). If it's any consolation, think about it like this: you lose money on the purchase price of the bag the minute you take it out of the store - sitting in your closet, the bag is an entirely sunk cost. If you sell it, even for a really low amount compared to what you paid for it, you're reducing the sunk cost amount, you are getting some of the
money back.
From this point of view, it makes more sense to sell bags you aren't using at all/you will never use, rather than keeping them in your closet - even if there's no way you can come close to recovering the price you paid, they're worth absolutely nothing sitting on a shelf. However, from this point of view, it makes even more sense to consider purchases incredibly carefully in the first place.
I wouldn't sweat the situation. You've recognised that you want to change how you purchase bags and that means every day is a day to commit to making that change. Sell the bags you don't want and put the money in a separate account and just leave it there. Browse the forums and figure out the EXACT perfect bag you want for your life, but don't have (after all, something must be missing if you're looking for so many bags).
When you're confident you've found THE one, that money will be sitting there, ready
