Try just one of them today and see what happens! If this happens, pick the one that is most suited for this song, then save the rest for other future songs you write.
Write an entire song using only single-syllable words. This is the only element which is a hundred percent essential to a song. Your chorus should have a least a little different chord patteren than the verse.
Write a song about running a mile race. Consider a song about someone specific, then re-write it as if they were a totally different kind of person — for example, if the song celebrates their kindness, have yours berate them for their evil ways.
In the interest of clarity though, let me explain what all of these elements are so you can use them when you get more comfortable with songwriting. Use 4 to help you find new solutions to problems and give yourself more choices.
When you're just starting, negative thinking and internal feedback only make it harder to write. Like the song runaway love, or with you by chris brown.