Try adding raw garlic to your diet. One clove(section) after each meal chewed well, and washed down with plenty of water.
Licorice root, magnesium supplements, vitamin B12 supplements(even injections if necessary) and carnitine supplements will help increase your energy. I suggest that you east plenty of nuts and seeds, as these are a good source of minerals(especially magnesium) and calories, protein, and fiber.

Are you on a low carb diet? A low carb diet will help fight candida. Besides garlic, you could add turmeric, ginger, cinnamon, and other spices to fight candida. Cloves are good, although huge amounts of cloves or thyme can result in toxicity, especially if used over long periods.

Do you get enough vitamin D? Vitamin D is essential for detoxification, and vitamin D deficiency can greatly affect calcium metabolism, and disrupt your sleep.