In palmistry, you look at both hands. The dominant hand (the one you write with) reveals your present and the choices you make. The non-dominant hand shows your innate potential, inherited tendencies, and what life gave you at the start. Comparing the two reveals your evolution.
The dominant hand: lived present
The dominant hand is the one that moves, writes, acts. Its lines record what you really do with your life.
It's the one that evolves most: career choices, love stories, moves, breakups leave visible traces there.
The non-dominant hand: innate potential
The non-dominant hand keeps the signature you arrived with in the world. Its lines move less.
It reveals family predispositions, a native sensitivity, a temperament, independent of what you've made of it.
The gap between the two is the real reading
If your heart line is cleaner on the dominant hand than the other, you've learned to love better than your starting nature predicted.
If your fate line is broken on the dominant but straight on the other, you voluntarily forked away from the family script.
The wider the gap between the two hands, the more your current life diverges from what was expected of you.
And for left-handers?
The principle is identical but inverted: the left hand becomes the active hand, the right the potential hand.
What matters isn't geography but function: action versus heritage.