I invested in a pivx when price was high and maybe i got in a little over our head and fomo'ed a lot. There was no reasonable expectation for pivx to jump more than it did, and for a short term investment it was probably one of the worst, since it doesn't really bring anything new or ground-breaking to the table. Long term? Who knows what will happen.
HOLD all your PIVX coins for long term.
Then you will have opportunity to take profits, might be in the year of 2019 or 2020.
No need to fall into selling at low price.