Oh gosh, I'm currently in total panic! I can't think properly anymore, my heart has been racing for hours now. Yesterday I was informed that I've been selected for a PhD. I was in complete bliss all day. Then at night I realised that my fairly easy life might be over and that I'll have to work really hard for this. And today I'm in panic and can't calm down.

This project will involve some modeling, partly using exisiting software, partly adjusting those, partly existing code and partly adjusting it. The background for this (fluid flow modeling in space) consists of many integrations, and quite honestly, I understand nothing of this. I'm only just learning to programme as well. I know I will have to learn a lot for this, but will I be able to do so, and to understand it? Am I supposed to understand this now even before I start?

Help!

Did you have similar concerns before you started? How did you deal with it and how did it turn out in the end? Am I expecting too much at this pre-project stage?