Worrying doesn't usually help us to solve our problems. Worries tend to be rather vague and as a result they lurk around. Writing them down helps. You can look over your worries and decide which ones are productive, where you can take some action, and we can treat these as problems to be resolved.  Others are unproductive, because there is little effective action you can take.

The following tips are from the Harvard Business Review in May this year. Though they relate to business, they have more general relevance for our everyday lives.
  • Get input on pros and cons. List advantages and disadvantages and ask others for their perspective on which carries the heaviest weight.
  • Balance short term with long term. Determine what you'd be willing to give up in the long run for some important short-term gain — and vice versa.
  • Gauge support. While weighing alternatives, think about who will support a particular idea and who will oppose it. Ask whose support you can live without, and whose backing and buy-in you absolutely need.