Frugal

Definitions: (1) economical <usually with monetary possessions but also with all sorts of resources>; not using unnecessarily; saving; using precious resources sparingly; (2) entailing little expense; requiring few assets

Too Far: miserly, stingy

Quotes:
• Living a frugal lifestyle gives you the opportunity to invest more money towards your future. — John Rampton (1984-) American entrepreneur
• Being frugal, conscious of making money, is that sensibility of creating value and finding value and reinvesting in customers is what separates great restaurants from the average ones. — Joe Bastianich (1968-) American restaurateur