ive sat on over 1000 bombs before and not used a single one even though all of them were mine. it comes down to experience and will power. i've rolled so many times now that i save my serotonin for special circumstances. i won't eat a pill jus cause im bored because i know that i could wait until a magickal situation presents itself in which i would want the magickal effects of MDMA to be present.
Take it from someone who started their ecstasy use with no regard for their serotonin. SPACE your rolls. i was eating almost ten pills a week for about a year, and it totally destroyed ecstasy for me. my serotonin levels are still low and MDMA basically just feels like adderall to me w/o the empathy or mental high, i jus feel like im on a tweaky speed.
Don't get jaded by the amount of drugs your pushin, an don start poppin pills cause your bored... it will ruin the drug for you. MDMA deserves respect, it has a spirit jus like acid, mushrooms, ibogaine or salvia. And if you abuse it that spirit will punish you.
If you are unsure wether you should roll or not; don't roll. When the situation is right to drop a roller you will know, you will feel it.
Editors Note: Thankfully Oregon is blessed with a constant supply of 100% pure MDMA (tested, and confirmed) so i have stayed away from the uncertanties of tabs and have started too get my magick back.