Suppose that a ruler or their chief minister had a chest full of garments of different colors. In the morning, they’d don whatever pair of garments they wanted. At midday, and in the evening, they’d don whatever pair of garments they wanted. In the same way, in the morning, at midday, and in the evening, I meditate on whichever of these seven awakening factors I want. If it’s the awakening factor of mindfulness, I know that it’s limitless and that it’s properly implemented. While it remains I understand that it remains. And if it subsides I understand the specific reason it subsides. … If it’s the awakening factor of equanimity, I know that it’s limitless and that it’s properly implemented. While it remains I understand that it remains. And if it subsides I understand the specific reason it subsides.”

Linked Discourses 46.5 1. Mountains A Monk