If you wanna know someone's deepest insecurities pay attention to what they judge the most in other people

This is a good exercise for self awareness also. For example, I tend to judge people who lack common sense and are easily fooled. After doing some soul searching I discovered that I do this because of the many times I was manipulated/deceived in the past

So there's a part of me that still feels a level of shame over the way I allowed people to manipulate me and take advantage of me. So when I'm shaming other people for being gullable/naive, I'm also shaming my past self. Which slows down my healing/growth

To combat this, I have to catch myself in the act and send love to the past version of me. And remind myself that I didn't know better. Which in turn allows me to tone down the judgment of other people because they also don't know better. And that's nothing to be ashamed of.

This self awareness thing is not for the faint of heart lol but it's necessary.

It helps you to love yourself and accept yourself. Which in turn helps you to love and accept others.