Frustrating lulls...what can I do???

These lulls in weight loss are really frustrating. I'm 6' and sat at 226 for quite a while. Got back into my training last year and watched the portion sizes, changed the food a little...dropped down to 208 fairly quickly but then sat there all summer, even though I increased my exercise volume. Decided to experiment a bit in December and started keeping an eye on carbs....tried to aim for 100 grams a day but no more. Quickly I dropped to 200. Someone told me I should really be thinking about trying to aim closer to around 50 grams a day, so I started doing that, and dropped down to where I am right now...about 188-190. This is where I seem to be stuck now once again. I really feel that it is completely reasonable to be shooting for a weight of 175. I certainly see people my height that are in the 150's and 160's but I think people would think I was sick at that point. I really feel 175 is probably a good goal, but I just can't seem to take off those last 10-15 lbs. It is very encouraging when you see a pound or two coming off every week. It is very discouraging when you just go back and forth between 188-190.

Any suggestions? I am not counting calories, but I make sure that I am not hungry, and I snack a little throughout the day to keep the metabolism moving and avoid hunger. Lots of almonds, olives, maybe a spoonful of almond butter....breakfasts is usually eggs/avocados...lunch is a chicken thigh, some almonds and maybe a greek yogurt (but I have to keep track of those carbs). Dinner....chicken/fish with some low carb vege like broccoli etc.