There is no 'cure' per se as a non-US investor currency risk is just something to accept (or swap return for a hedge but then it ends up being a wash mostly), for example if you invest in a World equities ETF, it's a bit pointless to be hedging exposure to all the currencies. Even if you decide to slant away from the US, it's likely a majority of non-US large caps have USD exposures.

It's more a psychological thing, you see absolute USD return and think you could've made that but there's not the actual return, your actual return is post conversion, if you'd have hedged you wouldn't have that abosulte return either, so you've never had it.

Additionally, if you're like most people and investing regularly or DCA-ing from now on you can buy at lower USD