I've tried every business method out there. Apps, notebooks, whiteboards — you name it. Most of them lasted about two weeks before I went back to my old habits. Then I found a system that actually stuck: using the right invoice template template.
I used to think I needed a complicated system for business. Turns out, the opposite is true. The best invoice template templates are the ones that let you start filling them out immediately — no tutorial, no learning curve, no setup. Just print and go.
Some popular options in this category: Crisis Communication Plan ($4), Product Pricing Worksheet ($4 - $3 - $4 for the whole set). Browse the full collection here.
The templates are instant download — no account, no subscription, no nonsense. Print as many copies as you need. If it doesn't work for you, it's free.