Ohh this reminds me partially of another reincarnation webtoon, but I like this concept. If she succeeds then the ending of the story will be altered. Let's see how she will accomplish her goals. Can't the title be shortened or something?
Raws:
https://hanascan.com/manga-yuusha-sama-no-osananajimi-to-iu-shokugyou-no-make-heroin-ni-tensei-shita-no-de-chougou-shi-ni-job-change-shimasu-manga-raw.html
https://comic-walker.com/contents/detail/KDCW_FL00201503010000_68/
Since I was reincarnated as a heroine who lost the profession of brave childhood friendship, I changed jobs to a compounde