Looking for help with body image while lightly dieting

As a women who is on paper significantly "overweight" but in reality has a fairly nice body, I feel like I am constantly battling between feeling like I should love my body as it is and thinking it would be ok if I got a little healthier and lost 10 pounds. I don't buy into society's definition of beauty, so I feel like putting myself on a diet is somewhat hypocritical, but I'm getting married in 7 months and want to look smoking hot. That being said, I've had body image issues for much of my life and dieting is a slippery slope to self loathing. I exercise fairly regularly, and am getting back into running, but do any of you lovely ladies have any advice for a girl looking to keep her body image up while trying to slim down a size or two?