If i'm feelin sad/angry/mad i write it down, or when i'm walking sittin in the train whatever and thinkin of stuff and somethin comes up i think yea thats cool i write down, mostly when don't do i can't remember it anymore. xD
The best thing is to write about yourself. what i mean by that is problems thats been bugging your like a bad relationship or something about someone passing away. its all about heart and soul cuz anyone can write lyrics, but its soo much more when you write about yourself because then the song actually means something to you.