Really Stressed Out!

Choosing classes for next semester is really stressful. I went to see my advisor to discuss my options for next semester, and everything seemed alright at first. Then I got to thinking and started second guessing the classes I originally planned to take. To top that off when I went to register there was a hold on my account that my advisor forgot to take off after I met with her. So now I'm not able to even register, and I'm unsure about what I should take :( The whole situation is more trouble than its worth. On top of that I have so much work to do, as teachers are assigning everything at once to get grades in by the end of the semester.