Stress
You? Stressed? Creative, cool, rational, critical-thinker-you? Never.
In fact, the life of a biosystems engineer isn't all that stressful. The hours are a reasonable and often flexible forty hours per week. You won't need to live from paycheck to paycheck. You'll have an occasional deadline, but you're not a breaking news reporter for the New York Times. You're designing machinery, not operating it. Chill, man. Hug a tree, smell some flowers, and work those numbers in peace.