songwriter's block

it has been too long since i've written a song. i believe the last song i've composed was some time in the beginning of the year, and i thought it wasn't good enough. so as always, i kept it in this folder i have for songs i've written but don't think it's good enough to share. a friend told me once to just put my music out there regardless of how i feel. it was good advice, but i guess i'm too insecure? ...when it comes to song writing. i don't know what's wrong, but it's just so frustrating. i can't seem to write music anymore.