On a day when you’re feeling motivated, productive, and energized, write a letter to yourself. Describe what you did that week and how it made you feel. Use your positive energy to infuse that letter with motivation and uplifting words. Mention an idea, tip or new methods you learned. Specify a food that helped you that week. Make a short list of quick and helpful reminders. Whatever you feel will be motivating to you in the future. Then on a day when you’re struggling, open the letter you wrote to yourself to get that boost of motivation you need.