Chances are it's just not right for you if you feel that uncomfortable. What's your feeding period like? I think the easiest one to adhere to is berkhan's 16/8 fast/feed period.
break the fast at 12 and have a few healthy solid meals from then until 8pm.
I feel like CT's method is better for an anabolic response to food though ( short feeding time with pulses during the fast ). but obviously the only diet that will work is one that you can adhere to for long term.