Our 1 year old LOVES her thumb, she has it in her mouth 75% of the time. I hate it so much, she sleeps with it in he mouth too. I know this is bad and I pull it out when I can - (not when she's upset) but when she's just sitting playing with it in her mouth, i say "yucky we don't need that" and she just laughs. I want to do it before it starts affecting her teeth, how did you break your thumb suckers habit?