I have a bad habit of getting into something new, learning the fundamentals, and then moving on. But as for why you might drop something easy for something har

I have a bad habit of getting into something new, learning the fundamentals, and then moving on. But as for why you might drop something easy for something harder, it might be as simple as that before you learned how to play the piano, it was hard. But as you learned the fundamentals of how to read music and play, it became easier and the guitar might be new territory that is hard because you haven't learned it yet- so it's exciting fresh territory. Another situation where I might quit is if I reached something really hard and I don't think it's worth the effort to get over the hurdle. I think this is usually what makes people quit or avoid learning something new. I personally have learned that I am more likely to quit if I'm not at the right skill level. For example, I picked up The Intelligent Investor, skimmed the table of contents, found a topic I was interested in, flipped to page 300+, and I had no idea what the author was talking about, probably because I skipped the first 300 pages. I think when people try to move too fast beyond their skill level (intentionally or unintentionally), they end up hitting a barrier because they're missing prerequisites. Then they're more likely to quit because they start to wonder if they're stupid rather than realizing they just didn't learn all the previous steps that were required. And no one likes to feel stupid so they quit and do something that makes them happy and feel smart.