Here are the top three things we've learned from this bear market and the previous bull market.
1 - Defense wins championships, not offense.
The hard part isn't making money. The hard part is keeping it. Sell when the going is good.
2 - Don't use your crypto holdings as a bank account.
Making financial plans on money in a crypto portfolio is pointless, as the value can decrease in the blink of an eye. Better to treat it as money you can't touch, and best to delete portfolio tracking apps like Blockfolio and not look at the value of your portfolio daily.
3 - Be skeptical. Manage risk.
The reward is not always worth the risk. Some times just holding bitcoin (BTC) or Tether (USDT) is the best move. They're lots of blind risks in crypto. Besides the risk of losing money, you also have illiquidity risk (never getting an exchange listing with enough volume to sell), market risk (a decent project losing money just because it came out in a bear market). Stablecoin lending rates on platforms like Celsius are currently at 8% annually. If the cryptocurrencies in your portfolio have gained less than 8% in the last 12 months, you would have been better off parking your money in Tether and lending it out.
Future altcoin bull markets will come back; it's the natural cycle of the market. The bear market will end when everyone that believed has tapped out and given up on altcoins. Then once people start making money in alts again, the herd will return to buy the top, and the cycle will start all over again.