"Content" in English is contento or contenuto in Italian.
contento
satisfecho or contento
Estoy Contento
Contento, a de oír...
"Yo estoy contento/contenta."
Yo estoy contento(-a) para tú.
That sounds good
The best translation would be "esta contento".
Breathe in your [feeling] contented is an English equivalent of 'Aspira tuo contento'. The phrase in Italian is pronounced 'ah-SPEE-rah TOO-oh kohn-TEHN-toh'. In the word by word translation, the verb 'aspira' means '[you] breathe in, suck in'. The masculine possessive 'tuo' means 'your'. The masculine adjective 'contento' means 'contented'.
The exact translation in English of "Yo tambien soy contento" is "I am also I am content." To have the sentence be correct in English as well as Spanish, it should be written as: Soy tambien contento "I am also content."
También estoy contento / contenta por ello.