When you have money burning a hole in your pocket

How do you keep hold of it instead of spending it all?

My problem is that the minute I have anything more than the bare minimum, I start thinking about upgrading my gear - computers, camera equipment, lighting, etc…

These purchases would improve my quality of life but they wouldn’t impact my business in any meaningful way - all my basic needs are well covered.

So how do I break the habit of a lifetime and learn how to be comfortable with a decent bank balance?