I can't call myself a healthy eater if fit, but I certainly try to do my best.
I have tried numerous diets, tablets, milk shakes, some of them helped me to shift weight the others were a waste of my time, health and money. My main motivations always were men (unfortunately) or clothes.
I always accepted myself the way I am up until I met someone or went shopping with girls and managed to fit in 1 outfit out of 8 I had in my changing room (maybe that's why I hate shopping).
I used to go to gyms, I even had few different personal fitness instructors, one was paying attention or chatting to others more than me and second one was too handsome (but I managed to start concentrating on my exercise routine than him) and maybe clueless, as I blame him for putting on muscle weight and not loosing weight.
Few years ago we bought a treadmill, which I think to date is the best fitness investment we have made. We placed it under the stairs so that we can always remind ourselves what we need to do some exercising. I have started using it well before being pregnant and continue using it at the moment- instead of running I am now walking on a treadmill every day for at least 20-25 minutes. I'm not on a diet, but after my sickly 1st trimester loosing few pounds motivated me to stay fit throughout pregnancy and to try and gain only baby weight.
I thought that treadmill every day is not enough, every weekend we drive to the park to have a long walk there and once a week we go swimming.
I don't remember if I ever was motivated that much, the fact that I want to be healthy& fit for myself and baby is the best motivation I could think of.
Plus I guess the fact that I didn't have any cravings helped as well :-)
I thoroughly enjoy my new way of life (even though I know it will change when little L comes to the world) and would recommend it to any pregnant lady or her partner.