Eat a balanced diet. If you are getting enough sleep but still somehow feel tired, it's near-certain that diet factors into the equation somehow. Take a good look at the stuff you're eating. Are you giving your body due respect? Depending on your current diet, there may be some obvious things you should be doing without. Sticking to a whole foods-based diet is your best bet, but you should take some time to work out a diet plan that suits you. Strike a balance that sufficiently compromises between your desired food and responsible, healthy eating.
Your thoughts and actions create a result. Everything you think, say, and do will have an effect. Every action generates a force of energy that returns to it in kind and that energy continues to flow back and forth. If you don’t have a clear understanding that this is how things are, then the Law of Attraction makes your reality seem like the world is bleak because you don’t understand how you are attracting the very thing you wish to get away from. You just do your best to keep thinking happy thoughts in the hopes that something good will eventually occur.