Hmm, my best achievement will be when I (hopefully) get my phd, but I do not have that yet! I guess that would leave it being publishing my first scientific paper. It is really nice to see your name in print for the first time, having written something no-one else has done before.
Giving m first talk at a conference! I find talking in front of an audience really frightening, but standing up in front of 60+ people and talking about your work gave me a real buzz. The fact that you are the expert in the room about your subject is really exciting. It’s great when people ask you questions after the talk as it shows they are interested in what you are doing.
I’ll have to go with Ed. On a personal level, my daughter was the greatest of achievements – pregnancy and birth are no mean feat! On a professional level, being able to raise the funding to do the research I am doing right now was a huge achievement.