Thinking about what songs are coming next instead of just relaxing, breathing and playing from my heart. Sometimes it can get to be almost like the enemy.
Suspicion is not less an enemy to virtue than to happiness; he that is already corrupt is naturally suspicious, and he that becomes suspicious will quickly be corrupt.
In other words, for every 10 enemy you kill you bring on 20 new recruits to their anti-coalition cause then essentially you are working against yourself.