Pacing is a myth. I've only been diagnosed a year, but I've been suffering for at least 15 years, and have always been very active. I've been ignored, and tried to push through it. If pacing and exercise worked I'd have been cured years ago.
Use of Wellbutrin (lower fatigue, improved sleep, and decreased pain), low dose Klonopin (sensory over-stimulation), and Trazadone, as needed (sleep) have improved my ability to work.