I have a clear protocol for money management, which I follow without asking questions. Any trader needs some kind of money management system that he can follow blindly, because we cannot take decisions when we are in a live position. We cannot take it emotionally. So what I do is very simple: I work with partial sizes: I take profit when the currency gain the same distance to the stop loss level (1:1), the rest I will follow until I reach the target I set before I opened the position. Same for cutting losses- I have a clear stop loss level but I never get there with full position- I cut half of the position half way to the stop loss level. This is how I work, easy and simple to implement. Has its pros and cons but works great for me.
I have a similar strategy but slightly different. When a trade is heading to the stop loss and signal confirmed I close the whole position. Works about 75%. Always better to cut the losses early and save the capital