After nine months on this forum, you really should spend some time reading the highly informational posts here. The sticky, for example! Nevertheless:

1. Use an estimator like https://bitcoinfees.earn.com/ to estimate how long your transaction will take to be confirmed. As of now, your 19.7 sat/byte fee has a 90% chance of confirming within the next 23 hours. This will, of course, keep changing as the network fills up or empties.
2. You have several options at disposal. As aleksej says, try RBF or asking friend to do CPBP. You can also wait it out but good luck with that, mempool is close to 200k txs.
3. Try to submit the tx for acceleration. You can try https://pool.viabtc.com/tools/txaccelerator/ or https://antpool.com/user/prioritiseTransaction.htm?m=savePrioritiseTx
OR
Search for users offering acceleration services here: https://bitcointalk.org/index.php?board=52.0

P.S. That's a lot of coin. Tell your friend not to skimp on fees next time!

Unless this was a RBF transaction, which I assume it is not, then you can't adjust the fee.
If you can contact the person who is receiving these bitcoins in this transaction, then you can instruct them to use CPFP method to bump up the fees and get it confirmed quicker.

There are some transaction acceleration services provided by miners as well.

This transaction will eventually confirm on it's own, but it could take weeks.

If it happens that you're using a modded AMD GPU, you might forgot installing the patcher

https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher

This is the pump and it will then be the dump which is what you are describing. History repeats itself and this happens very often.

There is another coming change (segwit2x) in November. If successful it should give more confidence to bitcoin investors and the price will go up. So it depends on weight and combination of these 2 factors. I expect short and small correction but in the long run it will go up anyway.