That comes with practise, practise & more practise - both reading charts (P&F and/or candlestick) and of entering and managing trades.
You should be able to write a system to practise , practise what, when ?
First turn off/hide your PnL, second only concentrate on points gained/loss per trading session, thirdly scale your position size based on a fixed % of your account - if your account grows then your initial position size will increase, and vice-versa.
It is not easy to tell my subconcious brain , there is no money in the account ,it counts like tape
Forget trying to ride an entire move, it's just not possible, be satisfied with a portion of the move - and then repeat that on each trade.
Small profits? Trying to time it ,you get whacked first before
you get chance to whack it , if it whacks you twice before you whack her then hard work , but if it whacks thrice you go drinking wine
So you want a shortcut? If that holy-grail exists I don't know where it's to be found 🙄