https://www.psychologytoday.com/us/blog/hide-and-seek/201205/building-confidence-and-self-esteem
https://www.goodtherapy.org/blog/silent-epidemic-lack-of-assertiveness-low-self-esteem-1103165
https://www.healthyplace.com/blogs/buildingselfesteem/2014/12/assertiveness-and-self-esteem/
https://www.healthyplace.com/blogs/category/buildingselfesteem/self-esteem-issues-building-self-esteem/