Discouraged by my lack of progress…

Wondering where I am going wrong. Writing it all down…yep. Exercising more and more…uh huh. Less food…check. Not binging anymore…again, yes.
Then what is it? I am eating 1500 cals a day and only 33 grams of fat…but still nothing, nada…no movement from Mr. Scale. I thought, when the stall first happened…it was hormonal…now I wonder, since it has been a MONTH!!!
So I am wondering what is going on. Could it be the carbs, late night eating, not enough sleep, am I not working out hard enough, sitting too much with my new job, too many cals? WHAT could it be…maybe all of these…or just one?
A friend of mine here gave me a food plan that she uses. She has lost so much weight on it, but it is very restrictive. No sweets…no sugar…no caffine…no this and that. I just don’t think I can do that. I have found things to substitute for the REALLY bad stuff I ate before…and I like having that option to help me through. But if that is the problem…then I guess I will have to stop eating them.
I keep looking at the list of food she has given me…and wondering…could I do this?
Was thinking today, that maybe I should have another dietitian look at my food diary or get a personal trainer…maybe they can figure it out for me. Cause I am stumped…and discouraged. Feeling like a boat out of water, waiting and hoping for the tide to come in…