It is one month into my summer vacation and the only task I have right now is to prepare for the General GRE that is coming up pretty soon. However, I still try to read a bit of math everyday. I feel extremely guilty if I ever get the thought of not doing math for just one day. I think that is going too easy on myself and letting myself slack off. So I end up spending most of my time reading math instead of studying for the GRE. I am wondering whether it is okay to not do math everyday even though I am looking into a career in math. When math professors take a vacation, do they just not think about work at all?