It would have worked out fine thanks as you would be able to see if you can read a chart, after all it was an intrayear trade call without a stop, but I think you miss my point. Trading (or making trade calls) without a stop because you think the trade is an "almost absolute probability" isn't the safest or most sensible way to trade. The probabilty might be high in your opinion but no trade is every a certainty therefore it has risk.
Calculate and manage that risk first before even entering a trade, it's mandatory not optional if you expect to survive in this business. You need to do that anyway otherwise how would you work out trade size?
This is really basic stuff that every trader should already know before going anywhere near a live account.
Have you ever heard of something called Sharpe Ratio?