Time for a haircut

Well, I've been growing my hair for seven months. I wanted to try and have an awesome 80's hairstyle for the GMCLA's 80's show... but the show came and went - and I sat on the sidelines with strep throat. (I'm still sad about that.) But now the real question - what do I do with my hair now? It's been so long since I've had it cut. I feel like I was working towards an accomplishment - but the time for the accomplishment left and I'm still stuck with the hair... And why am I getting so upset over hair? It grows back - right? 

I should just cut it. 

Decision made: I'm cutting my hair tonight. 

So why is it making me so nervous?