please help

how long will it take for me to like my body? /gen

i honestly don't know what i want my body to look like. i wanna be Morena but i also want to be pale. i wanna be fat but i wanna be skinny. i tend to change my body to the most preferable body everyone likes. if someone said i look good as a chubby person, id eat a lot but after awhile ill feel like I'm fat, so id change my whole appearance again.

i just want to feel comfortable in my body but i don't know if it is possible anymore. i cheer my self up everyday saying that I'm pretty but i don't feel comfortable or happy with my self. its like I'm being a totally different person that everyone desires. i feel like I'm being selfish whenever i talk about my body to someone, i feel like they are thinking that I'm bragging. now i don't even know what type of body i want to have or what i want to achieve.

right now i am underweight... 43kg at 15 and i feel like im unhealthy but everyone is starting to love how i look.