How to control emotions after series of losses???
..hmmmm....in my much younger days, a nicely rolled reed does the trick every time.
For these more matured times, sticking my head in a bucket of iced cold water for an extended time gives the same effect. Leaving my head longer in the bucket puts me in ICU which will then forced me to stop trading for at least a few days.
On a more serious note, learn to stop trading for a few days....or, if your account can still have sufficient funds, make one single selected trade, pre-set TP and then immediately turn off the computer and come back to check it in a week's time. If the account is wiped out, bang your head on the nearest wall and yell "Why am I so stupid??" over and over again under you passed out and have to be admitted to the ICU for R&R.
Simple solution to control your emotion is to
never ever trade with money you cannot afford to loss!
Treat that money as "entertainment/play" money...if you loss that, "so-what" attitude is the way to go!
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Or, if you are as rich as the Ruler of upper and lower Nile, dump a few tons of gold into your trading account to completely overwhelm & annihilate the forex market and bring it under your control & submission. From then onwards, you simply cannot loss!