I'm over 50.
Not bragging - I've done my share of Ping-Pong with weight.
But I have now lost 3/4 of my goal. In a year and a half. I have 10 more pounds to go.
My biggest changes in "choices" were:
1) serious stress reduction, and
2) significant restriction of starches (and sugar), including elimination of wheat
Some days I'm starving - and stuff myself with veggies. Other days I hardly feel like eating, so nibble on fruit. In some ways, it's almost like the intermittent fasting approach except I'm not planning it, I'm just listening to my body.