I've just started playing online poker a few months ago. And I want your assessment to how am I doing?

65% playing 30/60; 25% 50/100; 10% 100/200 playing everyday for a few hours.
+$9k in jul
+$12.4k in aug (Had a few bad sessions)
+$25.2k sept (had a really horrible 2 day run where I lost $30k, but manage to recoup most of my losses in later sessions)

i'm an average player with tendencies to be tight/passive. However, the big negative is that when I'm losing, I tend to play in long sessions, I try to chase my loses and I play even worse.

I think I have good money management skills. If i'm at a table where i'm outclassed, I leave and find a different game. I generally try to play only short sessions, and quit when I'm ahead.

Am I just lucky, or can I keep playing at this level?