How do i stop eating sugary foods?????? helPPPPPP!?

I can't stop myself from eating sugary stuff. I could be a health freak one minute and then eating lollies or cakes the next. I can't stop thinking of cakes and sweet stuff. And to make it weird I'm also a health freak... what to do , what to doooo.... I'm like hmmm yummm cakkkeee and then oHhhh mmm green tea and work outtt... ohh yeah and thEnnn lOllliessss and then OOhhh mmmm hot chocolatemmmm.... How the hell do I satisfy the other part! ..... I tried so hard not to eat sweets for so long but I keep going badddd.. NOpe I can't stop ittt! help help>:)