Uff! There's a lot! But if you're having lyrical writers block, then one thing that helps is writing from theme. First write down the emotional message of the song e.g.:
“I thought I was lost, but someone helped me feel hopeful again.”

Then I break that into themes for each section:
• Verse 1 = I hit rock bottom
• Pre-chorus = I meet someone positive
• Chorus = I feel hopeful about the future
• Verse 2 = I’m scared to depend on someone again, but I want to trust it

Once you know what each part means, the lyrics come easier and stay connected. Hope that helps!

I am only a beginner. .. have had some success with the following.

Write a song about something that touches your heart - it is a much easier place to start!

With a piece of paper and pencil - do a brain dump for 15 min. Write down every phrase every word that you can think of in relation to the subject - no filtering!!!

Then look at what you have written down and pull out the words for the main themes

Write them across the top of a page and underneath the theme words write rhyming words

Now you are probably ready to start writing your song - think of the form .. of the song you want to write Ie verses, chord, bridge etc. try and keep the song under three minutes if possible. Will be longer than that after a musical intro , etc

Many other things to think about but it’s a good place to start if you are new to song writing - Have fun with it!!

Keep a notebook of ideas and cultivate a rich, thoughtful inner life. As you're going about your day and you come across some turn of phrase that strikes your fancy -- from your own inner musings, from your conversations with others, whatever -- write it down. If you feel inspired to develop it further right then, great! If not, you can develop it later. Periodically go through your notebook and see what might be crying out for further development. I've had lyrics where I've gone years or even decades between jotting down that initial idea in a notebook and developing it into a full lyric.

The same sort of things can be used for musical ideas as well as lyrical ideas. In my case, I don't usually use a notebook for that, per se. Most of the time, I'll either record the idea on my phone, or I'll jot it down in Musescore.

When I've got either a full lyric that needs music, or vice versa, I'll go through my cache of ideas to see if anything seems like it might fit with further development.

I would also recommend Jeff Tweedy's book, How to Write One Song.