I spy a Nutribullet book on your shelf! Are you using it at the moment? A few months ago I decided I wasn't getting enough greens, so I decided to throw a load of stuff into a blender, and try to make myself a green smoothie.
My first attempt wasn't very good. I had spinach, carrot, and broccoli. I added water because it wouldn't blend without some fluid. The result was something that was so bitter that it was practically undrinkable, and made me gag. It was how I would imagine grass to taste. I popped off to the local shop which was a few minutes walk away, and bought a carton or apple juice. With added apple juice it was still quite horrible, but I did manage to drink it.
Since that first attempt I've adjusted my recipe slightly. I use apple juice instead of water as the blending fluid. The broccoli has been replaced with kale, because cruciferous vegetables make me gag, and the broccoli seems to make it foam more, which makes it harder to drink. I still have carrots, but I use frozen carrots now, because the blending process adds heat, so starting with frozen carrots helps keep it cool, and drinking it cold is easier than drinking it lukewarm.
I make it fresh everyday, and have been doing this for about 3 months now. I still haven't really got used to the taste, but I think it's doing me good, so I'm going to continue. I don't think you'd ever find what I make in a shop. It's not palatable enough to sell, and you have to force it down a bit like bad-tasting medicine. You could use a juicer, but then you wouldn't get the fibre, and consuming large amounts of vegetable juice without fibre might lead to problems.