Translation of Vitalität

It means a lot to me to participate and meet other people in this Internet forum. I'll know later if I can move my appointment in order to get together with our visitors from Canada.
Until now I have tried the copy the mode of operation of Mike in class. Even the homework that they gave us do not match the exercise that we tried yesterday. I could not fulfill this task anyway.
I am in my German lesson and I'm learning about the subjunctive. I had never heard about it before. Can you ever deal with all Verb conjugations? I just totally misunderstand the past tense!