Integrating Buddho Recitation with Vipassanā Practice or Technical Inquiry: Buddho Recitation as a Vehicle for Vipassanā

[RobertK]

@Paulo

which ones are the principal ones?

You have confidence in the Abhidhamma so that might be an area to consider, thinking of the immense profundity of the Buddha’s exposition. See this post by Renaldo and how a bhikkhu attained.
It probably goes without saying that the right way is very subtle and most of us tend to be looking for results which really hinder the progress. It all has to be with a profound non-attachment.

The Arahant Mahā~gatimbaya~tissa~datta~tthero

He became an Arahant while crossing the ocean in a boat. "Contemplating the Abhidhamma: For monks who are masters of the Abhidhamma too, as [they contemplate] the classification of aggregates (khandhantara ), the classification of sense bases (āyatanantara ), the classification of elements (dhātvantara), the classification of faculties (indriyantara ), the classification of powers, enlightenment factors, kamma and result (balabojjhaṅgakammavipākantara ), the analysis of the material and immat…