The phrase "esteem issues" refers to problems or difficulties a person may have with how they see or value themselves. It means that they may not feel confident, worthy, or have a positive opinion of themselves. Full definition
This stems from my self esteem issues of being overweight. (themamaknows.com)
It might relate to growing up in a family that made us feel that way or general self - esteem issues of not feeling good enough. (thecouplescenter.org)
My doctoral project investigated self - esteem issues in high functioning adolescents on the autism spectrum. (circleoflifecenter.info)