The trick is to figure out what itch it is scratching. For some people, tea is a cheap trip overseas, so buying teas from several different countries is like a world tour. That isn't a terribly harmful urge, so then the trick is just to shrink it down, if you can. If you have a local teashop, buying samples from them will scratch the itch, and as there is no shipping and handling involved, it isn't as burdensome on a local tea-seller as it would be buying online. Plus, you might find a tea you genuinely enjoy,
For some people, it is in response to a roadblock. Sort of like people who love making lists of the things they need to do but never seem to cross anything off. Some people love to buy tea in preparation for tea parties that they never hold. Not to sound scornful, this often means that there is some problem that they isn't related to having the physical tea available or the desire to host, but that they haven't quite figured out yet. It is a form of magical thinking, "If I reach some critical mass of tea, a tea party will just happen around me, like spontaneous combustion-" that sounds silly when you say it, but not so silly when you wish it. It's true, a kilogram of tea can be gone in an instant when split among a sufficiently large group having tea regularly, but the plans must be made.
If this dilemma is not addressed, it can sometimes turn a person into a tea-Gollum, a sort of sour grapes scenario where people start to think that their tea is too good for others anyhow, but the appeal still remains. A natural limiter on this was tea going stale, but the discovery of ageable teas have made it easier for people to be tempted down this path. In this case, the best I can suggest is to ask yourself if you can remember what made you want to drink tea more than once in the first place -- a lot of times, a lifelong tea hobby is started through one fond memory.
Occasionally it is due to commercial peer-pressure. What I mean here is that some teas designed for heavy drinkers are so cheap that they really don't sell the tea in amounts a lighter drinker can use. A lot of CTC British-style teas are in this boat, where the shipping on a quarter-pound costs more than the tea itself, but unless you buy direct it will have already gone stale, because the shelf life is only a few months. This one is hard to solve directly. The indirect solution is to buy tea in a different grade, such as orthodox broken, which naturally has a longer shelf-life. The cost goes up compared to CTC, but the pressure goes down, which leads to less bulk purchases.
true
. Lesson learned.