Is There Any Limit on How Many Companies You Think You Should Have?

I was just in that position a couple of years ago. When I launched my e-letter, I was opening a Roth IRA and I'm personally contributing money to this. This is my life savings and we're just going to follow the journey. Is there any limit on how many companies or minimum amount of companies you think that someone should have regardless of sector? You have to build up that diversification over time.