The picture here is similar (if slightly worse) than with my trading. I've not played much this month due to real life concerns and that is visible clearly in the numbers:
I currently have 3.67Bn ISK. That's an increase of -90mil or -3mil/day.
Clearly this is not what I was hoping for. One thing I have done this month is aggressively chase sell orders down, so a lot of what I was building was overpriced and as I chased the sell prices down my net worth dropped. The dangers of jEveAssets taking sell orders as gospel.
Secondly, in addition to spending 200mil on a EVEGuru subscription I also spent quite a lot of money on t2 skills for some of my characters. These are around 20mil each and you need quite a few to be able to build a range of items, primarily the "<insert name here> physics" skillbooks. This should allow me to produce a greater range of items.
The EVEGuru subscription might be about to really come into its own, as they just released the player-markets pricing feature, allowing you get prices and base your industry calculation on any structures you have access to, including null! I am very excited about this feature and will likely post more on it when I have had time to play with it.
For now, my plan for the month remains similar to my trading, play more, invest some of the money I have lying around and check out the null market module. I think I might try playing around with building small ships in null too, as t1 modules don't keep my slots busy enough as the runs only take an hour or 2. TBD here.