What’s the hardest part of running a business alone?

What’s the hardest part of running your freelance business alone?

I’m building SoloPro to make the day-to-day side of being a freelancer simpler — from tracking real profit and expenses to managing clients and understanding how much you’re actually keeping.

I’d love to hear from freelancers and solo business owners:

What’s one thing you wish you had a better tool for?