My investments are still up overall, would it be unwise to sell everything now and wait until the tariffs are rolled back or the market stabilizes?

I'm young but was hoping to retire early in \~15 years. My investments are still up overall, though gains have diminished substantially. Given the unprecedented nature of the tariffs and no hope for the market to rebound until they are rolled back, I'm seriously considering selling everything and waiting for that time. What are peoples' thoughts on this?