Here are some ways to control these emotions:
1. Don't expect much profit. For example: You think that you will become rich by investing in a coin.
2. After you have invested in a coin, you find that for some reason it has gone down in the market. At this time, without being emotional, you first look at the condition of the token, what condition it is in, and then take a decision with a cool head.
3. Avoid revisiting a coin after investing. You place a sell order with a specific target.
4. Trade according to market conditions. Don't immediately invest in someone's words.
5. Stay calm and try to control temporary emotions.
Honestly expecting too much profit after the price had moved in your favor would ended up losing the trade this is from personal experience when I was still a newbie I never considered the volatility of the price of the pair I was trading but now once I am profit I swiftly exit the trade though this is based on my experience in crypto trading as for investing in crypto the main coin I invested on is Bitcoin thus I never bother when the market sentiment is bearish because definitely a period of bullish season would surface that is the only crypto that would make me remain calm and without any fear after a through research on it past price behavior and Price Action