How to express psychological insecurity (not physical insecurity)? These two dictionaries seem to offer translations for insecurity that capture the physical sort, not the psychological sort (i.e., insecurity about your looks, weight, smarts, etc.).

http://www.cantonese.sheik.co.uk/scripts/wordsearch.php?level=0

https://www.yellowbridge.com/chinese/dictionary.php

Example sentence: What you react to, and what you're sensitive to, often reveal your insecurities.

1) In Mandarin, what's the best translation for psychological insecurity?

2) What's the best translation for Cantonese?
Security (think: Otis Redding) is 安全感, a very popular and common concept in Chinese.

——

Oxford gives the example:


  有安全感
  have a sense of security


——

Insecure is 没有安全感.

Oxford has the example sentence:


  她没有安全感。
  She feels insecure. 


I think Cantonese would opt for 缺乏 over 没有 giving you something like:


  缺乏安全感