You are causing your problems.
As your business grows, you have to constantly redesign your job in it so it doesn’t swamp you.
What part of your job do you need to get someone else to do? Do it.
What do you struggle with and do poorly that you need to get someone else to do? Do it.
What do you dislike doing and need to get someone else to do? Do that, too.
What do you need to just stop doing altogether? Stop it now.
Designing and reinventing your own job is necessary for your survival and advancement.