In palmistry an island is considered very unlucky sign
Island At The Starting, Middle & End Of Life Line On Hand
An island at the start of life line shows health issues just after birth or family loss.
An island at the middle of life line shows family problems, unexpected sudden trouble/expenses, health issues (mostly indigestion-related), and instability in life/delay in all aspects of life.
An island at the end of life line shows health issues in old age, chronic disease, diabetes, and financial issues in old age.