I find this word to be very difficult to spell. With the way I pronounce many words trying to spell something phonetically is not normally a successful solution for me. So I’ll try a silly phrase instead.

It’s A sure BEt that DIet and Exercise TESts our will power
DI-A-BE-TES

Still doesn’t work as well as I’d like, so I’ll have to see if I can come up with something better later.