Is thin a positive, negative or neutral word?

It depends on the context

Explanation:

"Skinny" implies that someone is too thin and therefore has a negative connotation. "Thin" is the most neutral, while "slim" and "slender" are more positive and considered complimentary.

you can change by someone having a negative opinon of you in many ways for example thi can lead to depression and taking of ones life also known as sucide this effects there self esteem and ego in a negative way making them feel sad depressed and stressed causing them to act gloomy and sad if this continuses this can lead to self harm or much worse things.

hope i .

we need to see the paragraphs in order to answer this.