SCD worked miracles for me, but I would slowly cut out different things, one at a time. I'd start with sugar, then soy, corn, other grains, nuts, peanuts and other legumes... All of those are (mostly) illegal on the diet. Unfortunately, I found the diet and strictly adhered to it immediately. I may very well be able to tolerate many of the "illegal" SCD ingredients, but I'll never know because I'm too afraid to upset the great feeling I have right now. I do know, however (After a couple oopses) that sugar is one of the main culprits. Since carbohydrates are complex sugars, my logic is that grains would be just as troublesome for me.
Or you can just do what I did if you're too busy to feel sick all the day, cause 'ain't nobody got time for dat.