What should I change in my appearance?

flip the photo and you will be good

that hair is sick man, start lifting and get hella ripped then all the girls/guys/whatever you like will love ya even more than they probably do now

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.