For long-term investment, you will not panic because of short-term price fluctuations. Although you may make less money in the short term, the long term is safer than short-term investing (provided you are investing in value coins, not meme coins). You can spend more time analyzing market conditions.
You will not panic only if you do not follow the price changes in the cryptocurrency market. If you regularly monitor the change in the value of your deposit, then you will be just as upset that it is decreasing as other traders. Now you may be upset that you could have bought more bitcoins if you hadn't done it a few months earlier.
Panicking will only hinder you to be successful in trading. Cryptocurrency is too volatile and the prices aren't constant so the drop in prices might only make you feel doubtful if you'll keep on monitoring the market from time to time. If you enter trading, you have to make sure that you're also emotionally prepared and will have enough patience until you reach your target profit. It will take a lot of patience so you really have to trust the process.