Fluctuation of Motivation Cultivation (ation)

My moods tend to fluctuate quite a bit. So does my mindset. I can be sure of myself one minute then grasping for certainty the next.

Verizon HR Representative contacted me today and like everyone else except for my parents he told me that what I do with my life is my choice because it's going to be me waking up every morning to go to work and I don't want to be miserable for the rest of my life. I wonder if he made the right decision; I wonder if he's happy being Verizon Human Resource Representative.

On a related note, I need to be alcohol- and drug-tested within the next 48 hours for Verizon.

Also, I still haven't really studied for Physics or Biology yet.
These moods do not help in cultivating motivation for higher education.