Be available to catch songs when they arrive; maybe that means you always have an instrument to hand – or a notepad (or a recording device) in your pocket.
Songwriting Blog
Tip: Learn your instrument
Learn your instrument – play different styles, different keys, different tunings, different chord inversions. I’m not a virtuoso guitarist but my friend Graham Mackintosh is. If I ever need to know where my weaknesses are or what I need to work on – I just visit Graham for a jam.