30+ days of 0dte spx. Sizing, exits, and drawdown control

I spent 30+ days mainly trading 0dte spx options under fixed drawdown and consistency rules. The biggest lesson was that being right in direction is not enough. With 0dte spx options, a trade can be correct in idea but still badly managed. Poor entry, oversized contracts, holding too long, or trying to recover one loss can damage the account faster than the actual market move. What helped me: Opening Range Breakout for early direction VWAP for confirmation 7, 21, 50, and 200 EMA for momentum and trend context Support/resistance for trade location Smaller sizing so one trade doesn't define the whole day Taking profits according to the plan instead of chasing every extra point Stopping once the session goal was done \[You can check the image: Example of the ORB structure I used. I was looking for a price to break above the opening range high, hold above VWAP/EMAs, and give a clear invalidation level below the range.\] The consistency rule changed how I looked at profit. A huge green day sounds good, but in an eval account it can create problems if the rule limits how much one day can contribute. That made me focus more on repeatable trades than big wins. My main takeaway: For 0dte spx, the setup matters, but the exit and sizing matter more. ORB, VWAP, EMAs, and support/resistance were enough structure. The real improvement came from not forcing trades when those things were not aligned. How do other 0dte spx traders handle this? Do you focus more on entry precision, faster profit taking, or smaller sizing when trading same-day spx contracts?