Meditate!
282. Wisdom springs from meditation; without meditation wisdom wanes.
Having known these two paths of progress and decline,
let a man so conduct himself that his wisdom may increase.
From The Dhammapada: The Buddha’s Path of Wisdom, Translated by Acharya Buddharakkhita, Buddha Dharma Education Association Inc. https://www.buddhanet.net/pdf_file/scrndhamma.pdf