My Name Is Impossible to Pronounce, I Need To Pick A NickName, HELP PLZ!?

ok, so my name is Tsedal and it is an Ethiopian name meaning heavenly light. My family calls me Tsedi, and so ppl came up with the nickname Sadie & i have been going by that for about 2 years. Problem is i cant stand being called Sadie! I'm now about to start college and would love to start the year with a nice name that ppl can actually pronounce. If you have any decent names in mind please let me know. Thanx