Well I thank you for sharing. I happen to believe that players sharing their experiences, including results can be beneficial to other players. In our cases, showing what a bad year looks like by the numbers. Then when someone a little less experienced, perhaps even just a recreational or part-time player experiences a really bad run, they know it isn't that abnormal.
As for your 50% of income coming from your first month, January, I have had two sort of similar experiences in my career. In 2011, I think it was early in the year, I had an experience that I wrote about that I call the perfect shoe. It was just a stunningly good shoe, from the time I started max betting early in the shoe, I didn't lose a bet. I won 20 grand in that shoe. For that year my blackjack total was just a hair over 60k, so 1/3 of my years win came in that 15 minutes.
Then either the next year, 2012 or 2013, I had a year that started out bad (still my worst start to a year). By mid April I was in the red 32k. Then I went on a 5 week run where I couldn't lose. Won 115k in 5 weeks. Seemed like almost every max bet, every doubled down and split won. Then as quickly as it started that run ended. At the end of the year, I was up almost exactly 115k. That means for 47 weeks both before and after that 5 week run, I was dead even. It is funny how the swings work.

BUT, sharing these kind of experiences is beneficial to others and shows just how odd the game can run.