I am going to be honest with you. I have had the same feelings of frustration with my weight, definitely. But if you are truly eating small portions of only very healthy and low-calorie foods and are gaining weight with no medical issues, I think it is worth examining if that is REALLY what is happening. I am not accusing you of being dishonest, but I know that this has happened to me many times. I think, "I am trying SO hard and eating almost nothing and I'm not losing!" This is why food journals are such a great help. First, it helps you see what you're actually putting into your body and second, it makes you think before you put something in your mouth. I've noticed that what tends to happen to me is like this: I eat a healthy breakfast (which I remember when I'm bemoaning my lack of weight loss) and then end up not even noticing the three donut holes I eat at work, I have a nice salad for lunch, and then since I had such a "healthy" breakfast, I think, "I should get some avocado/cheese/nuts on this" and then I don't really pay attention to how much I put on there. Then I don't notice the mid-afternoon granola bar and the handful of m&m's, I go home, taste and sample while I'm cooking my healthy dinner, and then feel good enough to "treat" myself to a couple of glasses of wine or some ice cream. If you asked me what I had eaten the day before, if I was not journaling, I would say, "Oh, healthy breakfast, lunch and dinner, low calorie." If you add up all the other stuff I ate, though, it could easily be an extra 1000 calories.

Again, I'm not trying to say this is what's going on with you, but it is something I've struggled with and thought I might suggest. After all, I'm an internet stranger who doesn't know you at all, so please don't take offense.

Also, though I know a lot of people here and elsewhere are really big into juicing, I gotta say, it's not something that has ever left me feeling satisfied and it ends up being a fair amount of sugar/calories without any bulk to keep me full.