If you have an iron ball then HOLD the coins you have, in 3 to 5 years it should go up. If you are a clever person you can just hedge your investments in crypto into USDT. Then try to imagine if Bitcoin suddenly crashed to $3k, then you can easily buy them using the money you hedge in USD. In that way when Bitcoin bounce back to $7k then you got a 2x profit.
Im on the newer side to crypto, just want to say that first.
Tether always stays between .99 and 1.01. How, I dont know. With it never really changing in price, why not convert your cryptos to tether to avoid losses when the market is crashing?