Something is happening on August 1st and that is supposed to affect cryptocurrencies.

Bitcoin may hardfork.

Even though it is now unlikely, because most miners are signalling SegWit2x activation.

SegWit2x requires a hard fork in November of this year which could split the chain into 2 or potentially 3
The chain which is the most mined will prevail
There will be a lot of uncertainty in the market
Altcoins will fall in value if Bitcoin does
I’m using Litecoin/Ethereum/Monero/Decred as safe havens for now
If you’re using exchanges/web/app wallets to hold bitcoins they might not be safe
Only having your own wallet such as a hardware wallet will create an additional wallet with the new version of the Bitcoin if it does fork.

Good luck!