I've tried many times, but I've only ever finished 50 songs once, in 2014. Another try this year?
I'm a guitar player first, a bad singer second, and a third rate songwriter third. I usually only write songs as excuses to record home demos, and I am much more into improvising guitar solos and using cool gear than writing lyrics and melodies. My personal rule is a song isn't finished until there's a complete, decently mixed demo. That said, I really love the whole process and hopefully I can make the time to put a good dent in 50/90 this year.
Good luck, everyone!