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Well done!
Changes like that are not easy but sooo worth it in the long run. (all puns intended)
I've never been a runner, except down hill where I could really extend my stride and feel more "natural".

Its critical to find something physical you enjoy and consistently do it, for me it's an elliptical on rainy days, walking, hiking or bicycling on dry days plus weights, core work and a bit of yoga.

Just back from about 3 weeks in Hawaii, we got in an average of 6 miles a day on foot, I was not snacking or eating as many sweets, had smaller dinners and I dropped 8 lbs that needed to go.
6' 4" and 215 is not too bad.

I now need to continue with minimal sweet snacks and stay just as active- I'd like to be at 190-200 and not carry the bit of extra on my stomach. More muscle/less fat!
Snacking on fruit or nuts instead of sweets is my plan.