Some things I've learned along the way...

Jot down ideas in your notes app. When you’re lacking inspiration it’s good to be able to look at a list to give you some ideas. It also means that good ideas don’t get lost or forgotten about. You can also send Whatsapp messages and voice notes to yourself.
Voice memos are also great for keeping ideas when they spontaneously pop up.
Set time aside to write and commit to it. An article doesn’t just happen on its own, it takes time and effort to write on...