Has anyone else felt overwhelmed by graduate school preparation

[MarieCaswell]

I have been studying for the GRE for months because I really want to get into a good graduate program. At first I felt confident but lately the pressure has been building up. I work part time and still have university classes to manage so finding enough study time has been difficult. Last night I took another practice test and my score was lower than I expected. I sat there feeling frustrated and disappointed for hours. At one point I was so stressed that I caught myself wishing someone could take my GRE exam and make all this pressure disappear. Has anyone else gone through this while preparing for an important test?