Expensive shoes, cheap word. People notice which one you actually walk on.

Spending is visible immediately. Whether you do what you said takes longer to show and lasts much longer once it does. People notice the mismatch eventually, and when they do, the expensive part starts reading as a distraction from the cheap part. Appearance can carry a room for an hour and not much further.

Check which of those two you have been investing in lately. If there is an unkept promise sitting around, deal with it before the next thing you buy. Nobody can see your word, and everybody can feel it.