I have looked at a lot of coaching books. The pattern is remarkably consistent: the money is already in the business, it is just sitting in places nobody checks.
The four common leaks
Expired packages. Clients with unused sessions who quietly stopped booking.
No-show drift. Two missed weeks becomes a cancelled client if nobody reaches out.
Unsent invoices. Work delivered, payment never requested.
Warm leads that went cold. People who asked about training and never got a second message.
Why it happens
None of these are laziness. They are all invisible by default. If your system does not surface them, they do not exist until the month ends light.
The fix
Make each leak a visible number you look at weekly: sessions remaining, days since last session, outstanding balance, days since last touch. Once it is on a screen, it gets handled.
That is the entire idea behind the Show Me The Money view in MonetizeMI — the revenue you already earned, ranked by what to do first.