I've been learning Chinese since 2016, so far discovered that in the case of a completely foreign language with no cultural ties to your mother tongue, 3 things are important: consistency, mindfulness and persistence. The second one is probably less obvious that the others, so here's an explanation: in addition to simply trying to learn everything by heart, it pays to actively try to understand the underlying system, the structure of the language, and the connections between its parts. Not only does it help advance faster, it can also provide a great insight into the culture and the mindset of the people whose language you're learning.