I suppose it largely depends on the type of trader that you are. EA/Manual, Short term/Long term, Technical/Fundamental, etc and a mixture of these.
For example, my preferred trading style is limited to intraday strategies as I just cannot get to sleep when I have a position over night and I was brain-washed back in 2009 to mistrust EAs. So basically, one of my closing strategy is to square any open order if I cannot babysit my trades. Richard Farleigh, a retired Aussie banker and former Dragon in the UK hit TV program Dragon's Den says in his book, "Taming the Lion", that unless the fundamentals according to his thorough research change, he would have no reason to close his positions and may even add to his core position over time as he lets his winners run. ( Interesting book btw).
You may want to also google and checkout the following blog: No Nonsense Forex. The owner, a prop firm trader is offering (for free) a road map for developing a successful manual trading algorithm based on Daily TF, by way of podcast and blog and answering questions put to him by his subscribers. You will learn how to test and develop your own entry and exit signals among other things that may suit your personal trading style. His podcast on Big Banks would elicit an interesting discussion on this forum. Especially why most retail traders fail.
Anyway, hope this helps...cheers!