I knew a guy once, used to compete in Strongman Competitions, heavy bloke, fairly tall and still made it happen but it was NOT easy as fitting in an Aircraft was difficult for him at best, did most of his training in C182s from what I recall which meant it cost a bit more as well.
Not much you can do about your height but certainly, unless as pointed out you're a Bodybuilder/Sportsman etc... then it could be a good time to take an extra 6 months or a year, save a bit more to be able to afford flying in larger singles like C182 instead of C152s to start and lose the weight at the same time.
Long and short of it is, if you want you, you'll make it happen!