lets say you are not sure you have a real edge but are tired of paper trading and want to put real money at play on a highly liquid pair, say, eurusd (the initial post refers to intraday fx), where the spread is around 1pip on many platforms, retail or wholesale.
open whatever type of account is suitable (mini or standard), and fund it with money you can afford to lose but dont really want to, then initially go for say 25 SL-30 TP very strictly, ie no averaging down or other excuse to overtrade or not take the loss if the mkt goes against you. i wld also recommend to strictly time-box your trade depending on whatever timeframe you have chosen, be it 15 minutes, 1h, 4h or less, and exit the trade no matter what if you haven't hit your SL/TP targets.
the objective at this stage is not to make money, its to acquire some precious discipline wrt to stop losses... and some confidence in the strategy, whatever it is... say your right 50% of the time, your acct is going to grow, v.slowly thats for sure, but reasonably steadily...
once you trust yourself enough to take losses when the mkt tells you to, and trust that your strategy's hit rate is indeed above 50%, then move on to the next step, where you will exit 80% of your position when you hit your TP, let the other 20% run its course. ideally you shld also start moving your stop loss back to break-even once you are less than 50% away from your TP etc etc. the objective here is to start clocking in good money and acquire some confidence in identifying reliable circumstances for a higher TP2 target...
once you get this to work well enough, there are plenty other threads you can look into for more elaborate entry/exit strategies ;-) cheers