Neophobia

Neophobia is the fear of anything new, especially a persistent and abnormal fear. In its milder form, it can manifest as the unwillingness to try new things or break from routine. Mild manifestations are often present in young children (who want the small portion of the world that they "know" to remain constant) and elderly people (who often cope using long established habits and don't want to learn "new tricks"). But neophobia could also be fear of losing what one has—e.g., the fear that if anything changes, one might never be happy again.