Things I can control:

• Caloric intake
• TV habits
• Keeping in touch with people
• Posting of Homeworks
• Movies I see
• Upkeep of Debian packages
• Spending

Things I can't control:

• Other's feelings
• Annoying people
• The price of objects
• Financial penalties
• Liars
• Employers

So, why am I focusing on the second list?