The Reward Strategy: The Art of War commenter, Tu Mu, added something important to Sun Tzu's advice quoted above. That is, "Rewards are necessary in order to make the soldiers see the advantage of beating the enemy; thus, when you capture spoils from the enemy, they must be used as rewards, so that all your men may have a keen desire to fight, each on his own account."
Considering that advice, your incentives are the spoils of your success. To put it another way, your incentives lie in the answer the following question:
"What will I get from being happy?"
The answer should include both tangible and intangible rewards. For example, "By being happy, I will find more things in life that excite me. By being happy, I will be able to do more of these things with the people I care about. I can find hobbies and activities that are fun and excite me. I can spend more time with my loved ones having good, quality fun. By being happy, I find time to schedule family walk time, including our dogs. By being happy, I find time to take pictures with my camera, train my daughter on the camera, and create a scrap book we will treasure for generations to come."
For you see, being unhappy prevents you from activities, opportunities, and the things that make you happy. The spoils go to your unhappiness. But by working on your happiness, you claim these rewards for yourself.
Conclusion: Using our emotions--rousing ourselves--so we want to defeat unhappiness boosts your energy to fight. But for long-term endurance in a prolonged battle against your unhappiness, you must follow the above strategy. This way, you strip unhappiness of its power and empower your way to happiness. Best of all, your rewards are guaranteed with each success. So declare war on your unhappiness today, and let me know how it goes for you.
For more advice: Read Part One of Declare War on Your Unhappiness (The Rousing Strategy) on my Hub page.