self discipline! if you don't need it---don't buy it!
if doing the shophop- just find the bunny & leave the site-move on to the next one
if receiving newsletters with great sales---just delete them (remove the temptation)
sometimes i will (shop, shop, shop) at an on line shop---really- put every single thing i would love to have into the shopping cart....then go to the cart...see the hundreds of dollars i have (on my wish list) and empty the cart...then close the site---for a bit it was fun to (load the cart) but then reality set in & i put it all back! if visiting the lqs- i make a list before i go- exactly what i am there for- i may ooohhh & aahhh over what is new---but then i get out my list & buy what i went for.
also, join the (moratorium) group---then you have a support system with many of us who are not buying fabric!
consider using what you have as (motivation) when the stash is used up you have an (excuse) to shop