My sister have bad habit. She like to suck her thumb like babies. Someone help?

@mhildi (52)
Indonesia
April 8, 2009 9:36pm CST
Well, since my sister still babies and until now (20 years old!!!) he had a bad habit. Suck her thumb, like babies. I need help, a way to stop her from that bad habit. Someone can help?
No responses