For those of you that hope to read a tip and get better at playing the game overnight...
Set your game searches to people within 100 points less and 300 points more than where you're at.
Playing underrated opponents is the best way to not only keep yourself from improving, but to actually devolve your level of play.
This is particularly important around the +1800 rated players. The reason this is true, is because if a 1500 sets the filter for <200 >200, then, out of 30 games, they'll likely play 10 people rated 1600 and 10 people rated 1400 and 10 people rated 1500.
However. If an 1800 player sets a filter for <200 and >200, they'll find that 80% of their opponents will be in the <200 range, and rarely will you see someone that's rated 1900 or 2000.
So ESPECIALLY for those that are +1800...it's important not to consistently be playing underrated players.
It doesn't take a genius to see what happens when you beat 8 underrated in a row, and then play someone that's playing at a 2000 level.
Have fun with your pieces!