Do not dwell on your problems. Think about the solutions for them. If you are constantly thinking about all of the things that are wrong in your life you will not find any happiness. If you take the time to think about how to resolve those problems you will eliminate them altogether.
A positive attitude is required for you to make any progress in your development. Having a bad attitude can lead you to in a bad direction. Assure yourself that positivity is the only way to see constructive changes in your life.
Do something everyday that gives you pleasure. You can get caught up in your day-to-day responsibilities and go days without doing something that you truly enjoy. Start now, by making a list of the things that you really like to do and commit to finding time in doing them. You will be much better able to handle the rest of your life, if you know that you will also be enjoying yourself, part of the time.