I haven't dabbled in the selling department as i only do trades for now. But yes its all about willpower and common sense really. II'll spend no more than 10 bucks a week if that on cards or other collectable stuff. Sometimes i skip a week. I only do one set a year and thats about all i can say.
Looking to complete the 2013 Archives Mets fan favorite Au's (Just need Ron Darling) and 2014 Topps Gypsy Queen set mini base + SPs. Also working on 2015 Topps Chrome and updates. Please note that if you have less than 15 trades, I ask that you send first.