Resolved Question

My trainer gave me a 1500 calorie diet that alternates days between high carb, high protein, high fat. Has anyone tried this?

1500 kcals is enough only if you're sitting on your butt all day. And then only if you have a specific medical condition.

You need more calories if you're doing more 'work'(training).

Also, you need enough calories to just merely make your organs work at a baseline efficiency to then begin to the toil of fat-burning. It's kind of like a wood-burning pit fire. If you're too weak to stack the excess wood then you'll never burn it. And in this analogy you can't eat wood (fat does not make the body work as well as new food, ahem.)

1500 calories and extra exercise will starve you and essentially emaciate the "core" self...bones, marrow, sinew, joints. Don't do that. It takes a lot longer to build back up than it does to wear it down.

The reason "Western scientific" diets don't work is because they really don't know how fat is stored or lost. Put your money into appointments with a Chinese Medicine doctor and take their treatments and advice. You'll feel more motivated and loose weight because the herbs and acupuncture and habit-changes will make your body work more efficiently. You can then motivate yourself to do the kind of work you'll then be capable of handling and you won't burnout or rebound.