How do I forecast when everything feels uncertain?

You can build a budget from things you know, but a forecast asks you to put numbers on things you do not, and that feels like guessing dressed up as math. Here is the freeing part: it is guessing, and that is allowed. A forecast is not a prediction that must come true. It is your best current thinking, written down so you can improve it. Stop reaching for the one right number. Instead, make three: a low case, a likely case, and a high case. The range is more honest than any single figure and far more useful, because it shows you what you are really facing instead of pretending you know exactly. Uncertainty handled openly is strength, not weakness. Take one thing you need to forecast and write those three numbers, along with the reason behind each. That is a real forecast. As the future arrives, adjust. You are not trying to be right on the first try. You are trying to be roughly right and quick to correct, and that beats precise and stubborn every time.