I am a first year master student and I am working as a student research assistant with one of my professors. He is nice and very competent. Moreover, I am supervised by a Post-Doc. A few months ago they asked me to do some things related to my work since what I had done was not completely correct. I was upset but went over it since it was the very beginning and what I am doing is completely new to me. Today I had another meeting with them and it seems to me that I disappointed them again since I have to start over again (more or less) and the professor asked the Post-Doc to supervise me more during this phase of the project.
Have you ever been in such a situation? Being wrong in more than one occasion even if the advisor asked you to do something (somehow guided you)?