In simple words
The head line runs across the middle of your palm, starting between thumb and index finger. Palmistry links it with how you think.
How to recognise this one: At the start, near the edge of your palm between thumb and index finger, the head line touches or runs together with the life line.
What it means
You tend to think before you act. Caution and consideration guide your choices, and you weigh the effect of a decision on others. You may have been close to family in your early years.
Growth
Trust that your thoughtfulness is a strength, then practise acting a little sooner once you have thought it through.
Palmistry is a tradition of reflection, not a medical or scientific reading. Lines change over a lifetime, and no line predicts illness or the length of a life.