You have lots of good advice. I especially like Hogie’s for providing structure. In answer to your question, I like the idea of learning a song and putting a few in your quiver. It provides a sense of accomplishment. and gives you something to pull out when you want to play with others. Ultimately, you’ll change them as your playing improves.
Someone else mentioned recording yourself to hear how your playing sounds. Obvious benefits as you try to improve. However, here’s “the rest of the story” taken from a recent issue of Premier Guitar magazine:
“. . . Many, if not most, musicians I know suffer from something I call music dysmorphia. As people who suffer from body dysmorphic disorder torture themselves with an overwhelming preoccupation of their perceived flaws, be they real or imaginary, musicians often listen back to their musical performances and only hear what they don’t like. (Timing is rushed, tone’s too thin or too bassy, note choice too cliché or too weird; it’s never quite right to their ears). I know a ton of players who are way better musicians than I will ever be, yet they genuinely don’t like the way they play. It’s not false modesty, it’s the inability to process reality accurately.”