Keep a positive attitude: There’s is nothing more powerful for self-motivation than the right attitude.
You can’t choose or control your circumstance, but can choose your attitude towards your circumstances.
The key, for me, is hitting the final step to "Share With Others". It can be somewhat addictive and self-motivating when you help others who are having trouble.
1. Start Simple: Keep motivators around your work area, things that give you that initial spark to keep motivated.
2. Keep Good Company: Make more regular encounters with positive and motivated people. This could be as simple as Facebook chats with peers or a quick discussion with a friend who likes sharing ideas.
3. Keep Learning: Read and try to take in everything you can. The more you learn, the more confident you become in continuing your weight loss journey.
4. Stay Positive: See the good in bad. When encountering obstacles, you want to be in the habit of finding what works to get over them.
5. Stop Thinking-Just Do: If you find motivation for a particular diet lacking, try getting started on something else. Something trivial even, then you’ll develop the momentum to begin the more important stuff.
6. Know Yourself: Keep notes on when your motivation drops and when you feel like an athlete. There will be a pattern that, once you are aware of, you can work around and develop.
7. Track Your Progress: Keep a tally or a progress diary for your exercise routines. When you see something growing you will always want to nurture it and try harder.
8. Help Others: Share your ideas and help friends get motivated. Seeing others do well will motivate you to do the same. Write about your success and get feedback from readers.
What I would hope happens here is you will gradually develop certain skills that become motivational habits.
Once you get to the stage where you are regularly helping others keep motivated, be it with a blog or talking with peers, you’ll find the cycle continuing where each facet of staying motivated is refined and developed.