Don’t spend money you don’t have. Avoid debt!
A good financial rule of thumb: Don’t spend money you don’t have.
Living within your means is avoiding debt. This assures that the money you spend is going towards [[What’s Important Now W.I.N.)]] and not something you long stopped appreciating.
Avoiding debt avoids interest. The items you buy using loans often wind up costing you 3x more than their sticker price.