I'd like to revise my previous definition and emphasize that being back on one's bullshit is not necessarily a good thing either. If you don't know how to control your bullshit, and it is negatively affecting you or others, then you're better off without engaging in your 'thing' (whatever that may be).
The phrase "back on your bullshit" is best used in the context when you're in a healthy mental & physical state and you wanna engage in the 'thing' that gives you pleasure/makes you tick, but this time it does not affect you or others negatively (either due to increased wisdom and/or
environmental factors). Sometimes this may never happen as you fear to be consumed by it again. People with a Type B
personality are less likely to be back on their bullshit, while those with a Type A
personality are more likely to.
EXAMPLE 1
Mother: Why on earth are you gambling again?
Son: Because I'm back on my bullshit! I feel I have self-improved a lot since, and I feel I can control myself now.
Mother: My dear, sooner or later you'll be consumed by it again. That's just the nature of gambling.
EXAMPLE 2
Nathan: Eyyy bro!
Dan: Hey Nathan! Wha-, you seem different!
Nathan: Well I had a
revelation this past week and for some
miraculous reason my mind has started being creative again. You probably know I've been a bit depressed this past month, but now I can finally kiss goodbye to
Writer's block because I'm back on my bullshit!
EXAMPLE 3
After being locked out of his Bitcoin account (worth $$$$$ now) and sworn to never touch bitcoin again, Solomon was back on his bullshit and decided to invest in bitcoin again.