[Senshi]

Get a good book, and start with the Joyo Kanji, or another method to make it systematic. NEVER GIVE UP.

Study every day and don't give up, meet Japanese online, in person, or practice with anime or Japanese dramas and keep working. Take college courses if they're available, but whatever you do, don't give up.

If you stay persistent you'll learn a language. Humans learn language naturally, and if you don't dwell on your difficulties and keep at it, you'll learn.

Good luck!