Stable income: Stable

Physiotherapy consulting can provide a stable monthly income for most people who try it, based on my research and observations. With the increasing demand for physiotherapy services, there is a consistent flow of clients seeking these services. Setting up a physiotherapy consulting business typically requires moderate setup costs ranging from $500 to $1,000. Profit can be achieved within 3 to 6 months. Many physiotherapists have reported earning a steady income through consulting, with most months being similar in terms of revenue. Therefore, if your best friend quit their job to pursue physiotherapy consulting full-time, you could confidently say, 'You'll be fine.' I'd rate it a 4 out of 5 because of the stable and predictable nature of income in this field.