This question comes up during interviews and from various people that you come across each day. Studies show that only a small percentage of your time during a job search should be spent on job boards. It's good to post your resume, keep it current and apply to appropriate positions but it's just as important to get out of your house or apartment to continue staying motivated and to meet new people.
Keeping busy by attending talks, presentations and events that interest you will definitely keep you focused and in good spirits. People tell me all the time how important it is to get out and not just focus on your search. It also doesn't hurt to receive emails and calls from people in your circle offering kind words and encouragement.
When you are working, you definitely have a much more structured environment. I try to create a to do list the evening before to keep me focused and to provide a sense of accomplishment. This habit should ensure a smooth transition back to work when you land your dream job.
Taking classes, online courses or learning a new language is a great use of time and also something that you can share with potential employers on interviews.