Decisions and inner child: listener question

When you see that your problem isn’t realistic, but brings up all kinds of kind created insecurity. How do you get to a place of knowing what ‘the child’ needs? For example, I’m unsure if my job is a good fit. Changing careers brings up feelings of anxiety and insecurity and I try to distract myself. I don’t really get the concept of inner child work. Can someone point me in the right direction?