I've been thinking a lot about focus and concentration these past few weeks. It's been my hardest obstacle to overcome; my moods have been a wild roller coaster, but my concentration abilities have been on a steady, steep decline. At least they're consistent.
I've tried everything. (Or at least, every possible idea I could find on the subject.) Some things worked better than others. Some things only worked in combination with other things. Some things just did not work at all. Like most mental strategies, the effectiveness of these routines varies wildly from person to person. Whatever helps you with your concentration may be extremely different from what helps someone else.
So here is a (not really) scientific report of my findings. If you have any other suggestions, or know of something I left out, feel free to leave them in the comments! I'm always searching.