This. I (loosely) follow bulletproof/keto diet and never have to watch how much I eat, without gaining weight. I just eat until I'm full, and if I have some munchies later in the evening, as long as I don't snack anything rich in carbs, I have no problem in keeping a stable weight.

I used to weigh about 100 kilo's, until I changed my diet to LCHF, now I'm about 70. A few months ago, as a test, I switched to Soylent for 2 months, and gained almost 10 kilo's.

I just think a high carb diet is not something that is compatible with an office job.