Reframe the Guilt Around a Purchase You Already Made

The item is bought, the money is spent, and you are still doing mental maths about it at 2am. Guilt after the fact does not undo a purchase, it just ruins the thing you bought. This gets you a calm, proportionate read on what happened and a line to use when the spiral starts again.

I bought {INPUT} and now I feel guilty about the money, even though it is done and cannot be undone. Help me reframe this without either pretending it was a great decision or spiralling into shame. Give me: one honest look at whether the guilt is proportionate, one thing I can learn for next time, and one sentence I can say to myself when the thought resurfaces. Keep the whole reply under 150 words, plain and calm, no toxic positivity.