She decided to do something special with her life after she was successfully treated for cancer.

VOA: special.2010.05.03

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

The expression means being afraid to do something you had decided to do.

VOA: special.2009.12.13

And I said,in protest, I decided to do an album that is the exact opposite, something with the most romantic lyrics of all romantic songs,".

VOA: standard.2009.11.03