I've smashed a lot of furniture. I don't recommend this though as it can get expensive.
Just approaching the same frustrations I think we all have, it seems that what you're experiencing is completely normal. You'll probably fluctuate within 100 or so ratings points for a while. Terrible days will come where you feel everyone must be cheating (almost certainly not the case), and other days where you're killing it, even got a Brilliancy!! or two, with very few blunders.
Fact is, if we continued to win more than we lost (once reaching our peak rating), we'd become chess masters in unrealistic record time. Competing against people better than you is the way to improve. But, when you play people better than you, expect to lose more often than you win. That's the bittersweet logic. As long as you study your losses (and wins) your progress will be subtle but inevitable... noticable from year-to-year, not month-to-month.
I'm relatively new to chess, but a regular competitor in various sports, and this seems to be the case across the board, even in chess--as I hear much of the age old wisdom practiced in this sport, as it is in all the others I'm better at and more familiar with. The recipe for success seems to apply the same way it does in wrestling, basketball, rugby, etc.
[Loss + Studying + more losses & studying = Improvement & Success]
Best of luck!
You need to wear your " I don't give a sh*t at all" pants before playing