Look, it's going to sound awful but writing isn't something you "take up". You do it because you have something you just have to say.

It sounds like you do, so, great.

Honestly the best thing for you to do is read. Read a lot and read often, and, most importantly, read a lot of different things. When you write, don't write to impress anyone. You will fail. Write what you think needs to be written.