Yōga Sūtra 2.33

वितर्कबाधने प्रतिपक्षभावनम्।

vitarkabādhanē pratipakṣabhāvanam।

[वितर्क बाधने प्रतिपक्ष भावनम्।
vitarka = illogical arguments or over thinking; bādhanē = when troubled by; pratipakṣa = counter it by opposing; bhāvanam = thoughts;]

When troubled by illogical thoughts or over thinking, counter it by opposing thoughts.