LOL! I had the same problems starting out, but now moss stitch (AKA seed stitch) is one of my faves.
Hint #1 -- If you cast on an odd number of stitches, every row will start with a knit, so you'll have one less thing to think about.
Hint #2 -- watch your work. You'll always be knitting the "bumps" and purling the "smoothies." This is good training for everything you do. It will help you identify problems before they're born.
Hint #3 -- slow waaaaaaay down until this stitch "gets into your fingers." Your poor hands have already developed some bad habits, here, so you need to give them a chance to unlearn the wrong way and relearn the right way.
Hint #4 -- don't start any projects with different patterns until you get this stitch under control or you'll just get frustrated again when you come back to this one.
GOOD LUCK! This stitch is well worth the effort of getting it mastered.