This is the 1715th most frequent Portuguese word.
consigo
"Consigo" means "with him/her/you" or "I manage/succeed".
In this sentence, 'consigo' means 'I can' or 'I am able to,' indicating the speaker's ability to understand.
Eu consigo entender tudo o que você diz.
I can understand everything you say.
Here, 'consigo' means 'with yourself,' a reflexive pronoun used to indicate the subject is acting upon themselves.
E você, já falou consigo sobre este assunto?
And you, have you already talked to yourself about this subject?
In this context, 'consigo' is used as part of the phrase, meaning 'I can' or 'I am able to.'