Identify areas of your life where you are wasting time and try to reduce these. A good way to do this is to log everything you do for a week in meticulous detail and then examine your record to see how you use (or misuse!) your time.
Develop a regular work routine. Keep your work space tidy so that you can work efficiently - it's hard to do this if things you need to find are buried under a pile of paper! Work to schedule so that you meet deadlines in good time - don't leave everything until the last minute. If you have a difficult essay to write, start by drafting out the structure first- this will break the ice.
When applying for jobs keep copies of all the applications you have made and keep a log of the date you applied, result, and a record of all your interviews, plus you were questions asked. This will help you to keep track of your progress and spot areas where you could improve.