I am and have been on a plateau lately. I just can't rid the weight. I fluctuate up or down a lb. or two.

I eat really healthy most of the times... I LOVE fruits and veggies, fish, chicken etc.) MY portions aren't overboard, I eat my 3 main meals and snacks. I've rearranged my work out, kicked it up a notch, watch what I eat, added in my shakes, work out more... but STILL nothing. What am I NOT doing right? This has been going on way to long, I am getting really upset with myself. I know, I shouldn't be but this is soooo nerve wracking, I don't know what to do to get off this no longer wanting or needing plateau. I want to loose weight. HELP! Please!