One proven approach to goal setting is to make your goals SMART.
S - Specific
M - Measurable
A - Achievable
R - Realistic
T - Time-bound
Helpful Hints for setting SMART goals:
Remember that goals are always evolving and changing.
Writing your goals down gives them more power and strength.
Be precise with your goals.
Surround yourself with positive and supportive people who will help you to stay on track.
Find a quiet, well lit place to study that is free from distractions (cell phone, television, non-studying friends).
Choose a comfortable place to study -- but not SO comfortable that you get sleepy!
Find the time of day that works best for you and make that your regular study time, if possible.
Form a habit of reading over each day's notes while they are fresh.
Bribe yourself! Upon reaching your goals, reward yourself with something fun.
Take frequent short breaks -- like taking a walk to energize yourself.
Alternate between studying alone and with a group. Working alone can be good for mastering concepts and information, while working with a group is a great way to test for true understanding.