When I'm learning a new language I like to try and solve problems from sites like https://adventofcode.com/ or https://projecteuler.net/
I find this gives my learning more of a focus. After you've done a few of these you should have enough confidence to attempt your own projects
JJ had very little to do with Lost after the first half season. He just helped set up some of the initial mysteries and left it to Lindelof to try and sort out the resolution. Lindelof went on to do some amazing series... the Leftovers and Mrs Davis both have good (although somewhat ambiguous) endings
When I'm learning a new language I like to try and solve problems from sites like https://adventofcode.com/ or https://projecteuler.net/ I find this gives my learning more of a focus. After you've done a few of these you should have enough confidence to attempt your own projects