First of all, it’s a life-long endeavor. One can get rid of and keep off weight; one doesn’t “get rid” of a bad middah, ok on to the next.
Just be open to the possibilities even if you’re not “there” yet; in a good healthy situation the chosson/husband and kallah/wife bring out the best in each other.
And BTW, you’re equating a bad middah with excess weight??!?