As Steve Kaufmann said do things you like to do…And as Luca Lampariello said fall love in the language…For myself I import my favorite songs in the language with lyrics and when I get stressed out I study them even they at advanced level until love the language.
Did you want to mean “falling in love with the language”?
*Fall love in the language
I don’t think you can “fall” love. The verb is usually intransitive.
I believe, Yutaka wanted to point out politely that Luca will have said “fall in love with the language”. You fall in or out of love, but you do not simply ‘fall love’. These sort of misunderstandings happen all the time in language learning.