What is this focus you speak of? I apparently lack that.
Over the decades I've easily started 100+ sets, and have completed 5 that I remember. I've even had half a dozen sets over 75% complete in PSA 8 grade but ended up getting bored and selling. These days I've finally accepted that I'm more of a type collector than anything, and like to dabble in a lot of different collectibles. I also prefer to have a smaller but higher quality collection.
And sometimes I still want to be a set collector.