I think the left hand palm indicates the destiny of your life determined at the moment of your birth, and the right hand palm tells you the destiny that comes along after you put effort in your life. Generally, most people have three lines on each palm, the middle line shows your wisdom and knowledge, the line closed to your fingers shows how you manifest your love and affliction, and finally the line adjacent to your thumb indicates your vitality and personal health. From this point of view, I believe you can go explore in more details if you are interested