The reason for articulating goals and identifying obstacles is to develop a strategy for achieving your goals. For example, one of your semester goals might be to accumulate twenty hours of community service during the semester that will count toward the eighty hours required for admittance to your degree program. Obstacles to this goal may include not being familiar with the local community as well as finding the time between now and the end of the semester. One strategy might include a visit to your advisor to talk about what opportunities might be available.
Try developing your own strategies for the goals and obstacles you have identified. List the strategies for overcoming the obstacles for each goal.