58. I tried magazine advertising to win new clients. One of my most expensive mistakes. Ever.

Don't do this.

Throwback to late 2014.

2 years after starting my cleaning business, we were doing ok.

The business had doubled in size year on year. We won a major commercial account and our tenancy cleaning division was growing.

Amongst all this excitement, I explored different avenues for generating new business.

95% of our business development came from cold calling an…