NihongoShark is in the process of migrating to NativShark.
All of our old website articles are being rewritten and formatted into lessons. This particular lesson you're looking for will now be a phase one extra credit lesson.
Here's a summary:
Some keys to maintaining motivation are becoming friends with native speakers, building your life around the language, and staying systematic (which NativShark will handle for you ).
This lesson is coming soon! Check back later
But in the meantime...