One piece of language learning advice that is quite widely preached is that you should concentrate on learning the most frequently -used words in a language at first, before learning less common words. By doing so you should have enough words to be able to understand and talk about everyday kinds of things. The advice on how to learn the words varies. I tend to absorb them through extensive reading and listening, but others like to use flash cards.
I was thinking about this today and realised that the words and phrases that I use most frequently might not be the same as the ones you use. We will probably have a shared core of words, but beyond that the list for each of us is likely to be different. Lists of frequently-used words are available for a variety of languages and are useful, but it might also be useful to think about what you as an individual most often talk about and to learn how to say those things in the language(s) you’re learning.
One way of finding out which particularly words and expressions you use most often would be to record your conversations for several days or even a week, and then to analyse the recordings. If you have a recording function on your phone, or a small recording device, this could be done discretely. As well as finding out which words and expressions you tend to use, you would also find out the typical topics you talk about. Once this has been done once, the results can be used for any language you’re learning.
Have you ever tried anything like this?