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Twisting your fingers can control your mind,do you believe it?
When you feel uneasy ,Massage your thumb to calm down,when you are afraid,holding your forefinger to increase confidence.when you feel angry,pulling the middle finger can print anger.when you feel nervous ,
Touch your little finger to get stability.
The act of pinching your fingers will form a hint,influencing your psychology ,when confronted with difficulties ,a small action will be faster than a strong self-suggestion