Every language learner should listen to the following lecture by a totally authentic person, Lýdia, who starts learning a new language every 2 years.
It summarises in a very concise way the principles that every language learner should learn in order to make the learning process enjoyable and effective. He basically highlights 3 principles that he believes lead to successful language learning. Which are these 3 principles? Give yourself 10 minutes and listen carefully to the lecture. You can change the language of the lecture, even to Hungarian.
Good luck!
https://embed.ted.com/embed/lydia_machova_the_secrets_of_learning_a_new_language?subtitle=en
English (UK) 
Magyar