Motivation is the most important thing to learn a foreign language well. Why do you want to learn English, German, French and Spanish, just because you are interested, or do you want to study and work in those countries? Are these learning purposes enough to give you strong learning motivation? In addition to the correct methods, the most important thing in language learning is persistent study every day. The most taboo is to fish for two days and dry the net for three days or simply give up halfway. Before, two people replied that love is particularly useful, because love can really give people a strong motivation to learn; With great learning motivation, you will be willing to spend time and try your best to study persistently, and you will naturally learn well. If you teach yourself, you must have good teaching materials that suit you. Keep studying every day, step by step, and don't want to swallow a fat man in one breath. If you want to learn all these languages, you must find a good order, one by one, and never learn two languages at the same time (the recommended order is English, French and West Germany). Besides studying, listen, speak and practice as much as possible. I am in London, and I have many friends from Europe. I will often try to talk to them and try to use what I have learned every day in conversation. Don't be afraid to make mistakes. Ask them to correct my pronunciation and language mistakes. You will remember deeply after learning and using it flexibly, and remember more deeply after making mistakes. If there are no people around who can speak these languages, try to watch more movies and TV series in these languages, then imitate pronunciation and even talk to yourself. Finally, find a point that can really cut into your major. For example, if I am an opera singer and want to sing songs in English, French, Italian, German and other languages, then this is the point where I combine language with my major. It is much more useful to really understand the logic behind language and words and sentences than to learn only standard pronunciation to understand and interpret works.