Next to testosterone, thyroid treatments are my second most energizing interventions. First, to evaluate thyroid, you must do the correct test. A TSH only is entirely unacceptable for evaluation. Also, I am not satisfied if my tests are in the lower end of the normal range, I want it to be optimal, in the higher of the range. When thyroid is corrected to optimal levels, I see improvements in many quality of life issues, including energy, mood, and even sleep. Thyroid also improves brain function, heart function and weight control. See if you want better energy, and better health , you should  get them checked by an expert that knows which tests to do, and what is an optimal reading.