Our bodies and physical parts can reveal a lot about the personality traits. Sometimes people aren't aware of their characteristics.
The thumb of your hand says a lot about your character.
1. When the first half of thumb is longer than the second one
You should never be afraid to speak what's on your mind. You should stop overthinking and believe your instincts.
If you can't open the thumb and index finger more than 90 degrees then it shows that you are a shy person which you don't show to the outside world. You like to have stability and comfort.
2. The first and the second half of the thumb are of same length
If you are able to open the thumb and index finger more than 90 degrees then you are a self-confident sort of person.
You are proud and always stick to the values.