For me my hardest decision I've made is loving someone that is not the same with my religion. I know that he's not the right one for me but here I'am still loving him without any assurance that we can be together till the end.
The most difficult decision I have ever made is to break up the one I love the most, with the reason we are far apart, there is no time for each other, so to keep the love is very difficult, I always have faith that Me and she will love each other forever.