Ok first of all, there is nothing wrong with writting like asking alexandria, woe is me, alesana, or silverstein....You cant just go pickup someone elses work and try to copy them, or "find" inspiration like some of these people are saying...that might work for hem but unless you feel it, it wont work for you.. i write the same way, ive been exactly where you are...I love matchbox 20 when i wanna write, however here are some tipsi think that will help you...
1. if your asking yourself what do other people relate to, or thinking what other artists do to capture their listeners ear and blah blah blah, STOP. You should be writting music for you...not them, so if thats what your good at feeling, and you express yourself through those lyrics the continue.
2. If u absolutely feel you needa write differently try to play how you feel on your instrument, if you play at different times in the week , eventually you will find a melody that seems different, and then you can try to think of why you fealt like playing that or what it reminds you of.
3. before you write, dont listen to anything, keep it quiet, and get all those melodies out of your head at the risk of subconsciously writting like them...
4. Last tip is find something that means a lot to you...feel what you did then and relate, to stop writting hopeless love lyrics i try to not use the word he or her she or him and it will kind of force you in another direction..
Let me know if i helped at all, any other questions feel free to respond or pm me.