The Buddha explains the importance of arousing energy and the consequences of having many desires, few desires, dissatisfaction, contentment, (careless) attention, wise (careful, mindful) attention, lack of clear comprehension, clear comprehension (attentiveness), and bad friendship.
Vīriyārambhādi vagga - The Chapter Beginning With Arousing Energy
1.61
Bhikkhus, I do not see any other single quality causes unarisen wholesome qualities to arise, or arisen unwholesome qualities to decline as arousing energy. For one who has aroused energy, bhikkhus, unarisen wholesome qualities arise, and arisen unwholesome qualities decline.
First.
1.62
"Bhikkhus, I do not see any other single quality that causes unarisen unwholesome qualities to arise, or arisen wholesome qualities to decline as having many desires. For one with many desires, bhikkhus, unarisen unwholesome qualities arise, and arisen wholesome qualities decline."
Second.
1.63
"Bhikkhus, I do not see any other single quality that causes unarisen wholesome qualities to arise, or arisen unwholesome qualities to decline as having few wishes. For one with few wishes, bhikkhus, unarisen wholesome qualities arise, and arisen unwholesome qualities decline."
Third.
1.64
"Bhikkhus, I do not see any other single quality that causes unarisen unwholesome qualities to arise, or arisen wholesome qualities to decline as discontentment. For one who is discontent, bhikkhus, unarisen unwholesome qualities arise, and arisen wholesome qualities decline."
Fourth.
1.65
"Bhikkhus, I do not see any other single quality that causes unarisen wholesome qualities to arise, or arisen unwholesome qualities to decline as being content. For one who is content, bhikkhus, unarisen wholesome qualities arise, and arisen unwholesome qualities decline."
Fifth.
1.66
"Bhikkhus, I do not see any other single quality that causes unarisen unwholesome qualities to arise, or arisen wholesome qualities to decline as unwise attention. For one who attends unwisely, bhikkhus, unarisen unwholesome qualities arise, and arisen wholesome qualities decline."
Sixth.
1.67
"Bhikkhus, I do not see any other single quality that causes unarisen wholesome qualities to arise, or arisen unwholesome qualities to decline as wise attention. For one who attends wisely, bhikkhus, unarisen wholesome qualities arise, and arisen unwholesome qualities decline."
Seventh.
1.68
"Bhikkhus, I do not see any other single quality that causes unarisen unwholesome qualities to arise, or arisen wholesome qualities to decline as lack of full awareness. For one who lacks full awareness, bhikkhus, unarisen unwholesome qualities arise, and arisen wholesome qualities decline."
Eighth.
1.69
"Bhikkhus, I do not see any other single quality that causes unarisen wholesome qualities to arise, or arisen unwholesome qualities to decline, as much as having full awareness. For one having full awareness, bhikkhus, unarisen wholesome qualities arise, and arisen unwholesome qualities decline."
Ninth.
1.70
"Bhikkhus, I do not see any other single quality that causes unarisen unwholesome qualities to arise, or arisen wholesome qualities to decline as bad friendship. For one with bad friends, bhikkhus, unarisen unwholesome qualities arise, and arisen wholesome qualities decline."
Tenth.