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.
thank you for this idea. i lost a lot of money days back. now I retry it and monero gives me the most positive feeling right now. bought at $5. monero rocks.
project that you did supported we are inside crypto and things really move unpredictably, xmr will be .05 btc anytime then.