Start your chosen behavior change and monitor how it goes for a four week period. At the end of each week, write a half-page to one-page (100-250 words) journal entry (include the date for each entry) describing your progress thus far in specific, measurable terms including how frequently you engaged in the problem behavior and how frequently you successfully changed the behavior, as well as any challenges or obstacles that you experienced. Some people prefer to include a behavior tracking/monitoring sheet as well, which you can create on your own or find online. Your journal entry should also include discussion of revisions to your change plan that you made or plan to make for the next week, sources of support for making the change that you found helpful, and benefits of the change that you are noticing.