In a portfolio of 10 stocks, 3-4 would underperform.
3-4 would be sluggish & give okayish returns.
And 2-3 will outperform everything.
And those 2-3 stocks which outperform everything bring in the majority of gains to your portfolio.
You don’t need each & every stock in your portfolio to be green.
The day you understand this, your life as investor would improve.