had an order at 27.5 usd and just missed it the past week and now the 100% gain... 
There may be several more 100% gains to come, so don't feel like you lost your opportunity. I recommend spending a fixed dollar/euro/yen amount every week, ignoring price. This works well for most people, if they persist.
The main thing to learn from your case is that you don't benefit from xmr you don't hold. All the many hours I have spent trading were of insignificant value compared to just being their, bags full, when the moves come.
This is the truth. The risk/reward ratio is way off and almost always foolish.
Trading is worth pennies to the upside and fortunes to the downside when the real moves happen.