To know when to sell in a bull run, it is important to have a solid plan in place before the bull run starts.Monitor market sentiment for signs that a top may be nearing, such as everyone talking about crypto and projects being hyped up.Use technical analysis and indicators like the 200 EMA, RSI, and candle patterns to spot trends and possible market tops.Stay grounded and avoid comparing yourself to others. Control your emotions and stick to your selling plan.