By using the tag Popular songs I am able to trace the development of my short and unsuccessful songwriting efforts. I started in September '15, so I have been writing for 2 years and 2 months. I couldn't do song in all the keys that I know now. I've been able to do more complex things, though complexity is not an end in itself. My playing is far better: I only started piano lesson in fall of '16, or a year after I had started. My new teacher now is teaching me proper piano technique, which makes it much easier to play well.
I need a system to write them down and keep track of them.